WorldWideScience

Sample records for archives distributed access

  1. National Radiobiology Archives Distributed Access user's manual

    International Nuclear Information System (INIS)

    This User's Manual describes installation and use of the National Radiobiology Archives (NRA) Distributed Access package. The package consists of a distributed subset of information representative of the NRA databases and database access software which provide an introduction to the scope and style of the NRA Information Systems

  2. National Radiobiology Archives distributed access programmer's guide

    International Nuclear Information System (INIS)

    The National Radiobiology Archives is a comprehensive effort to gather, organize, and catalog original data, representative specimens, and supporting materials related to significant radiobiology studies. This provides researchers with information for analyses which compare or combine results of these and other studies and with materials for analysis by advanced molecular biology techniques. This Programmer's Guide document describes the database access software, NRADEMO, and the subset loading script NRADEMO/MAINT/MAINTAIN, which comprise the National Laboratory Archives Distributed Access Package. The guide is intended for use by an experienced database management specialist. It contains information about the physical and logical organization of the software and data files. It also contains printouts of all the scripts and associated batch processing files. It is part of a suite of documents published by the National Radiobiology Archives

  3. National Radiobiology Archives Distributed Access user's manual

    Energy Technology Data Exchange (ETDEWEB)

    Watson, C.; Smith, S. (Pacific Northwest Lab., Richland, WA (United States)); Prather, J. (Linfield Coll., McMinnville, OR (United States))

    1991-11-01

    This User's Manual describes installation and use of the National Radiobiology Archives (NRA) Distributed Access package. The package consists of a distributed subset of information representative of the NRA databases and database access software which provide an introduction to the scope and style of the NRA Information Systems.

  4. National Radiobiology Archives distributed access programmer's guide

    Energy Technology Data Exchange (ETDEWEB)

    Prather, J. C. [Linfield Coll., McMinnville, OR (United States); Smith, S. K.; Watson, C. R. [Pacific Northwest Lab., Richland, WA (United States)

    1991-12-01

    The National Radiobiology Archives is a comprehensive effort to gather, organize, and catalog original data, representative specimens, and supporting materials related to significant radiobiology studies. This provides researchers with information for analyses which compare or combine results of these and other studies and with materials for analysis by advanced molecular biology techniques. This Programmer's Guide document describes the database access software, NRADEMO, and the subset loading script NRADEMO/MAINT/MAINTAIN, which comprise the National Laboratory Archives Distributed Access Package. The guide is intended for use by an experienced database management specialist. It contains information about the physical and logical organization of the software and data files. It also contains printouts of all the scripts and associated batch processing files. It is part of a suite of documents published by the National Radiobiology Archives.

  5. OASIS: A Data Fusion System Optimized for Access to Distributed Archives

    Science.gov (United States)

    Berriman, G. B.; Kong, M.; Good, J. C.

    2002-05-01

    The On-Line Archive Science Information Services (OASIS) is accessible as a java applet through the NASA/IPAC Infrared Science Archive home page. It uses Geographical Information System (GIS) technology to provide data fusion and interaction services for astronomers. These services include the ability to process and display arbitrarily large image files, and user-controlled contouring, overlay regeneration and multi-table/image interactions. OASIS has been optimized for access to distributed archives and data sets. Its second release (June 2002) provides a mechanism that enables access to OASIS from "third-party" services and data providers. That is, any data provider who creates a query form to an archive containing a collection of data (images, catalogs, spectra) can direct the result files from the query into OASIS. Similarly, data providers who serve links to datasets or remote services on a web page can access all of these data with one instance of OASIS. In this was any data or service provider is given access to the full suite of capabilites of OASIS. We illustrate the "third-party" access feature with two examples: queries to the high-energy image datasets accessible from GSFC SkyView, and links to data that are returned from a target-based query to the NASA Extragalactic Database (NED). The second release of OASIS also includes a file-transfer manager that reports the status of multiple data downloads from remote sources to the client machine. It is a prototype for a request management system that will ultimately control and manage compute-intensive jobs submitted through OASIS to computing grids, such as request for large scale image mosaics and bulk statistical analysis.

  6. Distributed archive and single access system for accelerometric event data : a NERIES initiative

    CERN Document Server

    Péquegnat, Catherine; Gueguen, Philippe; Godey, Stéphanie; Frobert, Laurent; 10.1007/978-94-007-0152-6_10

    2012-01-01

    We developed a common access facility to homogeneously formatted accelerometric event data and to the corresponding sheet of ground motion parameters. This paper is focused on the description of the technical development of the accelerometric data server and the link with the accelerometric data explorer. The server is the third node of the 3-tier architecture of the distributed archive system for accelerometric data. The server is the link between the data users and the accelero- metric data portal. The server follows three main steps: (1) Reading and analysis of the end-user request; (2) Processing and converting data; and (3) Archiving and updating the accelerometric data explorer. This paper presents the description of the data server and the data explorer for accessing data.

  7. Data Access Tools And Services At The Goddard Distributed Active Archive Center (GDAAC)

    Science.gov (United States)

    Pham, L. B.; Eng, E.; Sweatman, P.

    2003-12-01

    As one of the largest providers of Earth Science data from the Earth Observing System, GDAAC provides the latest data from the Moderate Resolution Imaging Spectroradiometer (MODIS), Atmospheric Infrared Sounder (AIRS), Solar Radiation and Climate Experiment (SORCE) data products via GDAAC's data pool (50TB of disk cache). In order to make this huge volume of data more accessible to the public and science communities, the GDAAC offers multiple data access tools and services: Open Source Project for Network Data Access Protocol (OPeNDAP), Grid Analysis and Display System (GrADS/DODS) (GDS), Live Access Server (LAS), OpenGIS Web Map Server (WMS) and Near Archive Data Mining (NADM). The objective is to assist users in retrieving electronically a smaller, usable portion of data for further analysis. The OPeNDAP server, formerly known as the Distributed Oceanographic Data System (DODS), allows the user to retrieve data without worrying about the data format. OPeNDAP is capable of server-side subsetting of HDF, HDF-EOS, netCDF, JGOFS, ASCII, DSP, FITS and binary data formats. The GrADS/DODS server is capable of serving the same data formats as OPeNDAP. GDS has an additional feature of server-side analysis. Users can analyze the data on the server there by decreasing the computational load on their client's system. The LAS is a flexible server that allows user to graphically visualize data on the fly, to request different file formats and to compare variables from distributed locations. Users of LAS have options to use other available graphics viewers such as IDL, Matlab or GrADS. WMS is based on the OPeNDAP for serving geospatial information. WMS supports OpenGIS protocol to provide data in GIS-friendly formats for analysis and visualization. NADM is another access to the GDAAC's data pool. NADM gives users the capability to use a browser to upload their C, FORTRAN or IDL algorithms, test the algorithms, and mine data in the data pool. With NADM, the GDAAC provides an

  8. Archives, Education, and Access: Learning at Interference Archive

    Directory of Open Access Journals (Sweden)

    Bonnie Gordon

    2016-07-01

    Full Text Available Archives are a tool for education and the access policy of an archive affects what kind of education takes place in its space. In this paper, we describe how Interference Archive (IA, a community archive in Brooklyn, New York, provides access through an open stacks policy and experiential learning, which allows for unique educational opportunities. These methods of providing access are intended to subvert representational power, allowing visitors, donors, and volunteers to take part in deciding how histories are told, how materials are accessed, and how the collection is re-used as a resource for learning about contemporary and historical social movements.

  9. European distributed seismological data archives infrastructure: EIDA

    Science.gov (United States)

    Clinton, John; Hanka, Winfried; Mazza, Salvatore; Pederson, Helle; Sleeman, Reinoud; Stammler, Klaus; Strollo, Angelo

    2014-05-01

    The European Integrated waveform Data Archive (EIDA) is a distributed Data Center system within ORFEUS that (a) securely archives seismic waveform data and related metadata gathered by European research infrastructures, and (b) provides transparent access to the archives for the geosciences research communities. EIDA was founded in 2013 by ORFEUS Data Center, GFZ, RESIF, ETH, INGV and BGR to ensure sustainability of a distributed archive system and the implementation of standards (e.g. FDSN StationXML, FDSN webservices) and coordinate new developments. Under the mandate of the ORFEUS Board of Directors and Executive Committee the founding group is responsible for steering and maintaining the technical developments and organization of the European distributed seismic waveform data archive and the integration within broader multidisciplanry frameworks like EPOS. EIDA currently offers uniform data access to unrestricted data from 8 European archives (www.orfeus-eu.org/eida), linked by the Arclink protocol, hosting data from 75 permanent networks (1800+ stations) and 33 temporary networks (1200+) stations). Moreover, each archive may also provide unique, restricted datasets. A webinterface, developed at GFZ, offers interactive access to different catalogues (EMSC, GFZ, USGS) and EIDA waveform data. Clients and toolboxes like arclink_fetch and ObsPy can connect directly to any EIDA node to collect data. Current developments are directed to the implementation of quality parameters and strong motion parameters.

  10. Making Archival and Special Collections More Accessible

    Science.gov (United States)

    Renspie, Melissa, Comp.; Shepard, Linda, Comp.; Childress, Eric, Comp.

    2015-01-01

    Revealing hidden assets stewarded by research institutions so they can be made available for research and learning locally and globally is a prime opportunity for libraries to create and deliver new value. "Making Archival and Special Collections More Accessible" collects important work OCLC Research has done to help achieve the…

  11. NOAA Operational Model Archive Distribution System (NOMADS): High Availability Applications for Reliable Real Time Access to Operational Model Data

    Science.gov (United States)

    Alpert, J. C.; Wang, J.

    2009-12-01

    To reduce the impact of natural hazards and environmental changes, the National Centers for Environmental Prediction (NCEP) provide first alert and a preferred partner for environmental prediction services, and represents a critical national resource to operational and research communities affected by climate, weather and water. NOMADS is now delivering high availability services as part of NOAA’s official real time data dissemination at its Web Operations Center (WOC) server. The WOC is a web service used by organizational units in and outside NOAA, and acts as a data repository where public information can be posted to a secure and scalable content server. A goal is to foster collaborations among the research and education communities, value added retailers, and public access for science and development efforts aimed at advancing modeling and GEO-related tasks. The user (client) executes what is efficient to execute on the client and the server efficiently provides format independent access services. Client applications can execute on the server, if it is desired, but the same program can be executed on the client side with no loss of efficiency. In this way this paradigm lends itself to aggregation servers that act as servers of servers listing, searching catalogs of holdings, data mining, and updating information from the metadata descriptions that enable collections of data in disparate places to be simultaneously accessed, with results processed on servers and clients to produce a needed answer. The services used to access the operational model data output are the Open-source Project for a Network Data Access Protocol (OPeNDAP), implemented with the Grid Analysis and Display System (GrADS) Data Server (GDS), and applications for slicing, dicing and area sub-setting the large matrix of real time model data holdings. This approach insures an efficient use of computer resources because users transmit/receive only the data necessary for their tasks including

  12. Science information systems: Archive, access, and retrieval

    Science.gov (United States)

    Campbell, William J.

    1991-01-01

    The objective of this research is to develop technology for the automated characterization and interactive retrieval and visualization of very large, complex scientific data sets. Technologies will be developed for the following specific areas: (1) rapidly archiving data sets; (2) automatically characterizing and labeling data in near real-time; (3) providing users with the ability to browse contents of databases efficiently and effectively; (4) providing users with the ability to access and retrieve system independent data sets electronically; and (5) automatically alerting scientists to anomalies detected in data.

  13. Efficient Distributed Medium Access

    CERN Document Server

    Shah, Devavrat; Tetali, Prasad

    2011-01-01

    Consider a wireless network of n nodes represented by a graph G=(V, E) where an edge (i,j) models the fact that transmissions of i and j interfere with each other, i.e. simultaneous transmissions of i and j become unsuccessful. Hence it is required that at each time instance a set of non-interfering nodes (corresponding to an independent set in G) access the wireless medium. To utilize wireless resources efficiently, it is required to arbitrate the access of medium among interfering nodes properly. Moreover, to be of practical use, such a mechanism is required to be totally distributed as well as simple. As the main result of this paper, we provide such a medium access algorithm. It is randomized, totally distributed and simple: each node attempts to access medium at each time with probability that is a function of its local information. We establish efficiency of the algorithm by showing that the corresponding network Markov chain is positive recurrent as long as the demand imposed on the network can be supp...

  14. Making geospatial data in ASF archive readily accessible

    Science.gov (United States)

    Gens, R.; Hogenson, K.; Wolf, V. G.; Drew, L.; Stern, T.; Stoner, M.; Shapran, M.

    2015-12-01

    The way geospatial data is searched, managed, processed and used has changed significantly in recent years. A data archive such as the one at the Alaska Satellite Facility (ASF), one of NASA's twelve interlinked Distributed Active Archive Centers (DAACs), used to be searched solely via user interfaces that were specifically developed for its particular archive and data sets. ASF then moved to using an application programming interface (API) that defined a set of routines, protocols, and tools for distributing the geospatial information stored in the database in real time. This provided a more flexible access to the geospatial data. Yet, it was up to user to develop the tools to get a more tailored access to the data they needed. We present two new approaches for serving data to users. In response to the recent Nepal earthquake we developed a data feed for distributing ESA's Sentinel data. Users can subscribe to the data feed and are provided with the relevant metadata the moment a new data set is available for download. The second approach was an Open Geospatial Consortium (OGC) web feature service (WFS). The WFS hosts the metadata along with a direct link from which the data can be downloaded. It uses the open-source GeoServer software (Youngblood and Iacovella, 2013) and provides an interface to include the geospatial information in the archive directly into the user's geographic information system (GIS) as an additional data layer. Both services are run on top of a geospatial PostGIS database, an open-source geographic extension for the PostgreSQL object-relational database (Marquez, 2015). Marquez, A., 2015. PostGIS essentials. Packt Publishing, 198 p. Youngblood, B. and Iacovella, S., 2013. GeoServer Beginner's Guide, Packt Publishing, 350 p.

  15. ESA's Planetary Science Archive: International collaborations towards transparent data access

    Science.gov (United States)

    Heather, David

    The European Space Agency's (ESA) Planetary Science Archive (PSA) is the central repository for science data returned by all ESA planetary missions. Current holdings include data from Giotto, SMART-1, Cassini-Huygens, Mars Express, Venus Express, and Rosetta. In addition to the basic management and distribution of these data to the community through our own interfaces, ESA has been working very closely with international partners to globalize the archiving standards used and the access to our data. Part of this ongoing effort is channelled through our participation in the International Planetary Data Alliance (IPDA), whose focus is on allowing transparent and interoperable access to data holdings from participating Agencies around the globe. One major focus of this work has been the development of the Planetary Data Access Protocol (PDAP) that will allow for the interoperability of archives and sharing of data. This is already used for transparent access to data from Venus Express, and ESA are currently working with ISRO and NASA to provide interoperable access to ISRO's Chandrayaan-1 data through our systems using this protocol. Close interactions are ongoing with NASA's Planetary Data System as the standards used for planetary data archiving evolve, and two of our upcoming missions are to be the first to implement the new 'PDS4' standards in ESA: BepiColombo and ExoMars. Projects have been established within the IPDA framework to guide these implementations to try and ensure interoperability and maximise the usability of the data by the community. BepiColombo and ExoMars are both international missions, in collaboration with JAXA and IKI respectively, and a strong focus has been placed on close interaction and collaboration throughout the development of each archive. For both of these missions there is a requirement to share data between the Agencies prior to public access, as well as providing complete open access globally once the proprietary periods have

  16. Mandated data archiving greatly improves access to research data

    OpenAIRE

    Vines, Timothy H; Andrew, Rose L.; Bock, Dan G; Franklin, Michelle T.; Gilbert, Kimberly J.; Kane, Nolan C.; Moore, Jean-Sébastien; Brook T. Moyers; Renaut, Sébastien; Rennison, Diana J.; Veen, Thor; Yeaman, Sam

    2013-01-01

    The data underlying scientific papers should be accessible to researchers both now and in the future, but how best can we ensure that these data are available? Here we examine the effectiveness of four approaches to data archiving: no stated archiving policy, recommending (but not requiring) archiving, and two versions of mandating data deposition at acceptance. We control for differences between data types by trying to obtain data from papers that use a single, widespread population genetic ...

  17. Open Access institutional archives: a quantitative study (2006-2010)

    OpenAIRE

    2011-01-01

    Open access publishing is growing in importance, and, in parallel, the role of institutional archives has come to the forefront of discussion within the library community. The present study is an attempt to analyse the present trend of institutional archives worldwide. The factual data of each individual repository was collected from various Directories of Institutional Repositories by using survey method. Data was analysed in terms of quantity of institutional archives increased during last ...

  18. Mandated data archiving greatly improves access to research data

    CERN Document Server

    Vines, Timothy H; Bock, Dan G; Franklin, Michelle T; Gilbert, Kimberly J; Kane, Nolan C; Moore, Jean-Sébastien; Moyers, Brook T; Renaut, Sébastien; Rennison, Diana J; Veen, Thor; Yeaman, Sam

    2013-01-01

    The data underlying scientific papers should be accessible to researchers both now and in the future, but how best can we ensure that these data are available? Here we examine the effectiveness of four approaches to data archiving: no stated archiving policy, recommending (but not requiring) archiving, and two versions of mandating data deposition at acceptance. We control for differences between data types by trying to obtain data from papers that use a single, widespread population genetic analysis, STRUCTURE. At one extreme, we found that mandated data archiving policies that require the inclusion of a data availability statement in the manuscript improve the odds of finding the data online almost a thousand-fold compared to having no policy. However, archiving rates at journals with less stringent policies were only very slightly higher than those with no policy at all. At one extreme, we found that mandated data archiving policies that require the inclusion of a data availability statement in the manuscr...

  19. 36 CFR 1256.20 - May I obtain access to Federal archival records?

    Science.gov (United States)

    2010-07-01

    ... Federal archival records? 1256.20 Section 1256.20 Parks, Forests, and Public Property NATIONAL ARCHIVES... MATERIALS Access to Federal Archival Records § 1256.20 May I obtain access to Federal archival records? (a) Most Federal archival records are open for research without submitting a Freedom of Information...

  20. The Open Language Archives Community: An infrastructure for distributed archiving of language resources

    OpenAIRE

    Simons, Gary; Bird, Steven

    2003-01-01

    New ways of documenting and describing language via electronic media coupled with new ways of distributing the results via the World-Wide Web offer a degree of access to language resources that is unparalleled in history. At the same time, the proliferation of approaches to using these new technologies is causing serious problems relating to resource discovery and resource creation. This article describes the infrastructure that the Open Language Archives Community (OLAC) has built in order t...

  1. Improving Access to Archival Collections with Automated Entity Extraction

    OpenAIRE

    Kyle Banerjee; Max Johnson

    2015-01-01

    The complexity and diversity of archival resources make constructing rich metadata records time consuming and expensive, which in turn limits access to these valuable materials. However, significant automation of the metadata creation process would dramatically reduce the cost of providing access points, improve access to individual resources, and establish connections between resources that would otherwise remain unknown. Using a case study at Oregon Health & Science University as a len...

  2. Mandated data archiving greatly improves access to research data.

    Science.gov (United States)

    Vines, Timothy H; Andrew, Rose L; Bock, Dan G; Franklin, Michelle T; Gilbert, Kimberly J; Kane, Nolan C; Moore, Jean-Sébastien; Moyers, Brook T; Renaut, Sébastien; Rennison, Diana J; Veen, Thor; Yeaman, Sam

    2013-04-01

    The data underlying scientific papers should be accessible to researchers both now and in the future, but how best can we ensure that these data are available? Here we examine the effectiveness of four approaches to data archiving: no stated archiving policy, recommending (but not requiring) archiving, and two versions of mandating data deposition at acceptance. We control for differences between data types by trying to obtain data from papers that use a single, widespread population genetic analysis, structure. At one extreme, we found that mandated data archiving policies that require the inclusion of a data availability statement in the manuscript improve the odds of finding the data online almost 1000-fold compared to having no policy. However, archiving rates at journals with less stringent policies were only very slightly higher than those with no policy at all. We also assessed the effectiveness of asking for data directly from authors and obtained over half of the requested datasets, albeit with ∼8 d delay and some disagreement with authors. Given the long-term benefits of data accessibility to the academic community, we believe that journal-based mandatory data archiving policies and mandatory data availability statements should be more widely adopted. PMID:23288929

  3. User needs in television archive access

    DEFF Research Database (Denmark)

    Kirkegaard Lunn, Brian

    2009-01-01

    characteristics in a television broadcast context. The methodical approach is inspired by naturalistic research, and our main data is nine in-depth interviews conducted with scholars and students within the academic field of Media Studies. The analysis identifies four characteristics. Firstly, broadcasts are...... needed as objects of analysis in empirical research. Secondly, the needs are related to three broadcast dimensions: 1) Transmission; 2) Archive; and 3) Reception. Thirdly, four fundamental types of information needs are verified in a television broadcast context: 1) Known item; 2) Factual data; 3) Known...... research on characteristics of information needs in a television broadcast context. We demonstrate how one may go about generating knowledge which is imperative for the design and construction of future broadcast retrieval systems. Udgivelsesdato: 2009...

  4. Hyperview-fast, economical access to large data sets: a system for the archiving and distribution of hyperspectral data sets and derived products

    Science.gov (United States)

    Lurie, Joan B.

    1996-12-01

    TRW, under a Small Satellite Technology Initiative (SSTI) contract, is building the Lewis satellite. The principal sensor on Lewis is a hyperspectral imaging spectrometer. Part of the SSTI mission is to establish the commercial and educational utility of this data and the hyperspectral data already being acquired on airborne platforms. Essential requirements are rapid availability (after data acquisition) and easy accessibility to a catalog of images and imagery products. Each image is approximately 256 by 512 pixels with 384 bands of data acquired at each pixel. For some applications, some users will want the entire data sets; in other cases partial data sets (e.g. three band images) will be all that a user can handle or need for a given application. In order to make the most effective use of this new imagery and justify the cost of collecting it, we must find ways to make the information it contains more readily accessible to an ever broadening community of potential users. Tools are needed to store, access, and communicate the data more efficiently, to place it in context, and to derive both qualitative and quantitative information from it. A variety of information products which address the specific needs of particular user communities will be derived from the imagery. The data is unique in its ability to provide high spatial and spectral resolution simultaneously, and shows great promise in both military and civilian applications. A data management and analysis system has been built at TRW. This development has been prompted by the business opportunities, by the series of instruments built here and by the availability of data from other instruments. The products of the processing system have been shown to prospective customers in the U.S. and abroad. The system has been used to process data produced by TRW sensors and other instruments. This paper provides an overview of the TRW hyperspectral collection, data handling and exploitation capability.

  5. Integrating distributed data archives in seismology: the European Integrated waveform Data Archives (EIDA)

    Science.gov (United States)

    Sleeman, Reinoud; Hanka, Winfried; Clinton, John; van Eck, Torild; Trani, Luca

    2013-04-01

    ORFEUS is the non-profit foundation that coordinates and promotes digital broadband seismology in Europe. Since 1987 the ORFEUS Data Center (ODC) has been its jointly funded data center. However, within the last decade we have seen an exponential growth of high quality digital waveform data relevant for seismological and general geoscience research. In addition to the rapid expansion in number and density of broadband seismic networks this growth is fuelled by data collected from other sensor types (strong motion, short period) and deployment types (aftershock arrays, temporary field campaigns, OBS). As a consequence, ORFEUS revised its data archiving infrastructure and organization, a major component of this is the formal establishment of the European Integrated waveform Data Archives (EIDA). Within the NERIES and NERA EC projects GFZ has taken the lead in developing ArcLink as a tool to provide uniform access to distributed seismological waveform data archives. The new suite of software and services provides the technical basis of EIDA. To ensure that those developments will become sustainable, an EIDA group has been formed within ORFEUS. This founding group of EIDA nodes, formed in 2013, will be responsible for steering and maintaining the technical developments and organization of an effective operational distributed waveform data archive for seismology in Europe. The EIDA Founding nodes are: ODC/ORFEUS, GEOFON/GFZ/Germany, SED/Switzerland, RESIF/CNRS-INSU/France, INGV/Italy and BGR/Germany. These represent EIDA nodes that have committed themselves within ORFEUS to manage EIDA, that is, to maintain and develop EIDA into a stable sustainable research infrastructure. This task involves a number of challenges with regard to quality and metadata maintenance, but also to provide efficient and uncomplicated data access for users. This also includes effective global archive synchronization with developments within the International Federation of Digital Seismograph

  6. Distributed digital music archives and libraries

    Science.gov (United States)

    Fujinaga, Ichiro

    2005-09-01

    The main goal of this research program is to develop and evaluate practices, frameworks, and tools for the design and construction of worldwide distributed digital music archives and libraries. Over the last few millennia, humans have amassed an enormous amount of musical information that is scattered around the world. It is becoming abundantly clear that the optimal path for acquisition is to distribute the task of digitizing the wealth of historical and cultural heritage material that exists in analogue formats, which may include books and manuscripts related to music, music scores, photographs, videos, audio tapes, and phonograph records. In order to achieve this goal, libraries, museums, and archives throughout the world, large or small, need well-researched policies, proper guidance, and efficient tools to digitize their collections and to make them available economically. The research conducted within the program addresses unique and imminent challenges posed by the digitization and dissemination of music media. The are four major research projects in progress: development and evaluation of digitization methods for preservation of analogue recordings; optical music recognition using microfilms; design of workflow management system with automatic metadata extraction; and formulation of interlibrary communication strategies.

  7. 36 CFR 1256.26 - When can I appeal decisions about access to Federal archival records?

    Science.gov (United States)

    2010-07-01

    ... CFR part 1250, subpart D, Appeals. (b) For information on filing appeals for requests made under... about access to Federal archival records? 1256.26 Section 1256.26 Parks, Forests, and Public Property... HISTORICAL MATERIALS Access to Federal Archival Records § 1256.26 When can I appeal decisions about access...

  8. Data Vault: providing simple web access to NRAO data archives

    Science.gov (United States)

    DuPlain, Ron; Benson, John; Sessoms, Eric

    2008-08-01

    In late 2007, the National Radio Astronomy Observatory (NRAO) launched Data Vault, a feature-rich web application for simplified access to NRAO data archives. This application allows users to submit a Google-like free-text search, and browse, download, and view further information on matching telescope data. Data Vault uses the model-view-controller design pattern with web.py, a minimalist open-source web framework built with the Python Programming Language. Data Vault implements an Ajax client built on the Google Web Toolkit (GWT), which creates structured JavaScript applications. This application supports plug-ins for linking data to additional web tools and services, including Google Sky. NRAO sought the inspiration of Google's remarkably elegant user interface and notable performance to create a modern search tool for the NRAO science data archive, taking advantage of the rapid development frameworks of web.py and GWT to create a web application on a short timeline, while providing modular, easily maintainable code. Data Vault provides users with a NRAO-focused data archive while linking to and providing more information wherever possible. Free-text search capabilities are possible (and even simple) with an innovative query parser. NRAO develops all software under an open-source license; Data Vault is available to developers and users alike.

  9. Data Archiving and Networked Services (DANS) promotes sustained access to digital research data

    NARCIS (Netherlands)

    van Berchum, M.; Kraaikamp, Emilie

    2015-01-01

    Data Archiving and Networked Services (DANS) promotes sustained access to digital research data. For this purpose, DANS encourages researchers to archive and reuse data in a sustained form. In the online archiving system EASY research data is stored in a permanent and sustainable manner, according t

  10. Subject Access Points in the MARC Record and Archival Finding Aid: Enough or Too Many?

    Science.gov (United States)

    Cox, Elizabeth; Czechowski, Leslie

    2007-01-01

    In this research project, the authors set out to discover the current practice in both the archival and cataloging worlds for usage of access points in descriptive records and to learn how archival descriptive practices fit into long-established library cataloging procedures and practices. A sample of archival finding aids and MARC records at 123…

  11. Archiving Web Sites for Preservation and Access: MODS, METS and MINERVA

    Science.gov (United States)

    Guenther, Rebecca; Myrick, Leslie

    2006-01-01

    Born-digital material such as archived Web sites provides unique challenges in ensuring access and preservation. This article examines some of the technical challenges involved in harvesting and managing Web archives as well as metadata strategies to provide descriptive, technical, and preservation related information about archived Web sites,…

  12. Physical Oceanography Distributed Active Archive Center (PO.DAAC)

    Data.gov (United States)

    National Aeronautics and Space Administration — PO.DAAC is an element of the Earth Observing System Data Information System (EOSDIS). PO.DAAC's primary responsibility is to provide distribution and archive...

  13. 36 CFR 1256.22 - How do I request access to restricted information in Federal archival records?

    Science.gov (United States)

    2010-07-01

    ... restricted information in Federal archival records? 1256.22 Section 1256.22 Parks, Forests, and Public... DONATED HISTORICAL MATERIALS Access to Federal Archival Records § 1256.22 How do I request access to restricted information in Federal archival records? (a) You may file a FOIA request. To request access...

  14. New Archiving Distributed InfrastructuRe (NADIR): Status and Evolution

    Science.gov (United States)

    De Marco, M.; Knapic, C.; Smareglia, R.

    2015-09-01

    The New Archiving Distributed InfrastructuRe (NADIR) has been developed at INAF-OATs IA2 (Italian National Institute for Astrophysics - Astronomical Observatory of Trieste, Italian center of Astronomical Archives), as an evolution of the previous archiving and distribution system, used on several telescopes (LBT, TNG, Asiago, etc.) to improve performance, efficiency and reliability. At the present, NADIR system is running on LBT telescope and Vespa (Italian telescopes network for outreach) Ramella et al. (2014), and will be used on TNG, Asiago and IRA (Istituto Radio Astronomia) archives of Medicina, Noto and SRT radio telescopes Zanichelli et al. (2014) as the data models for radio data will be ready. This paper will discuss the progress status, the architectural choices and the solutions adopted, during the development and the commissioning phase of the project. A special attention will be given to the LBT case, due to some critical aspect of data flow and policies and standards compliance, adopted by the LBT organization.

  15. Data Archiving and Networked Services (DANS) promotes sustained access to digital research data

    OpenAIRE

    van Berchum, M.; Kraaikamp, Emilie

    2015-01-01

    Data Archiving and Networked Services (DANS) promotes sustained access to digital research data. For this purpose, DANS encourages researchers to archive and reuse data in a sustained form. In the online archiving system EASY research data is stored in a permanent and sustainable manner, according to the guidelines of the international Data Seal of Approval. Each datasets receives a Digital Object Identifier (DOI), facilitating the citation of research data. The metadata of all datasets in EA...

  16. GHRC: NASAs Hazardous Weather Distributed Active Archive Center

    Science.gov (United States)

    Ramachandran, Rahul; Bugbee, Kaylin

    2016-01-01

    The Global Hydrology Resource Center (GHRC; ghrc.nsstc.nasa.gov) is one of NASA's twelve Distributed Active Archive Centers responsible for providing access to NASA's Earth science data to users worldwide. Each of NASA's twelve DAACs focuses on a specific science discipline within Earth science, provides data stewardship services and supports its research community's needs. Established in 1991 as the Marshall Space Flight Center DAAC and renamed GHRC in 1997, the data center's original mission focused on the global hydrologic cycle. However, over the years, data holdings, tools and expertise of GHRC have gradually shifted. In 2014, a User Working Group (UWG) was established to review GHRC capabilities and provide recommendations to make GHRC more responsive to the research community's evolving needs. The UWG recommended an update to the GHRC mission, as well as a strategic plan to move in the new direction. After a careful and detailed analysis of GHRC's capabilities, research community needs and the existing data landscape, a new mission statement for GHRC has been crafted: to provide a comprehensive active archive of both data and knowledge augmentation services with a focus on hazardous weather, its governing dynamical and physical processes, and associated applications. Within this broad mandate, GHRC will focus on lightning, tropical cyclones and storm-induced hazards through integrated collections of satellite, airborne, and in-situ data sets. The new mission was adopted at the recent 2015 UWG meeting. GHRC will retain its current name until such time as it has built substantial data holdings aligned with the new mission.

  17. Open Access to Legal Scholarship and Open Archives: Towards a Better Future? = L’Open Access per la dottrina giuridica e gli Open Archives: verso un futuro migliore?

    OpenAIRE

    Guarda, Paolo

    2011-01-01

    The logic of Open Access (OA) is gradually spreading in the scientific community, mainly thanks to the help of important areas of public libraries. OA basically describes a phenomenon that sees many scientific communities publishing through the Internet their results (papers, articles, books, etc.) on archives accessible to anyone (and without payment of a price). OA seems to have the possibility to become a very powerful tool for the dissemination of scientific knowledge. As part of the gene...

  18. Archives de Paris : deux versements accessibles aux chercheurs

    OpenAIRE

    Zuber, Henri

    2016-01-01

    Les contacts avec les archives de Paris ont été par définition nombreux dès la création de la mission Archives de la RATP. Dès lors que les fonds d’archives de la tutelle et des compagnies exploitantes se complétaient, il était nécessaire de pouvoir renvoyer les lecteurs, dès l’ouverture de la première salle de lecture à Vincennes-Minimes, sur les archives de Paris, installées depuis 1990 dans leurs nouveaux locaux de la Porte des Lilas. Au début de 1994, lorsqu’il a été possible d’entreprend...

  19. Historical Time-Domain: Data Archives, Processing, and Distribution

    Science.gov (United States)

    Grindlay, Jonathan E.; Griffin, R. Elizabeth

    2012-04-01

    The workshop on Historical Time-Domain Astronomy (TDA) was attended by a near-capacity gathering of ~30 people. From information provided in turn by those present, an up-to-date overview was created of available plate archives, progress in their digitization, the extent of actual processing of those data, and plans for data distribution. Several recommendations were made for prioritising the processing and distribution of historical TDA data.

  20. Optimized access to distributed relational database system

    OpenAIRE

    Hrivnac, J.

    2006-01-01

    Efficient and friendly access to the large amount of data distributed over the wide area network is a challenge for the near future LCG experiments. The problem can be solved using current standard open technologies and tools. A JDBC standard soution has been chosen as a base for a comprehensive system for the relational data access and management. Widely available open tools have been reused and extended to satisfy HEP needs.

  1. Commercial imagery archive, management, exploitation, and distribution product development

    Science.gov (United States)

    Hollinger, Bruce; Sakkas, Alysa

    1999-12-01

    The Lockheed Martin (LM) team had garnered over a decade of operational experience on the U.S. Government's IDEX II (Imagery Dissemination and Exploitation) system. Recently, it set out to create a new commercial product to serve the needs of large-scale imagery archiving and analysis markets worldwide. LM decided to provide a turnkey commercial solution to receive, store, retrieve, process, analyze and disseminate in 'push' or 'pull' modes imagery, data and data products using a variety of sources and formats. LM selected 'best of breed' hardware and software components and adapted and developed its own algorithms to provide added functionality not commercially available elsewhere. The resultant product, Intelligent Library System (ILS)TM, satisfies requirements for (a) a potentially unbounded, data archive (5000 TB range) (b) automated workflow management for increased user productivity; (c) automatic tracking and management of files stored on shelves; (d) ability to ingest, process and disseminate data volumes with bandwidths ranging up to multi- gigabit per second; (e) access through a thin client-to-server network environment; (f) multiple interactive users needing retrieval of files in seconds from both archived images or in real time, and (g) scalability that maintains information throughput performance as the size of the digital library grows.

  2. Commercial imagery archive, management, exploitation, and distribution project development

    Science.gov (United States)

    Hollinger, Bruce; Sakkas, Alysa

    1999-10-01

    The Lockheed Martin (LM) team had garnered over a decade of operational experience on the U.S. Government's IDEX II (Imagery Dissemination and Exploitation) system. Recently, it set out to create a new commercial product to serve the needs of large-scale imagery archiving and analysis markets worldwide. LM decided to provide a turnkey commercial solution to receive, store, retrieve, process, analyze and disseminate in 'push' or 'pull' modes imagery, data and data products using a variety of sources and formats. LM selected 'best of breed' hardware and software components and adapted and developed its own algorithms to provide added functionality not commercially available elsewhere. The resultant product, Intelligent Library System (ILS)TM, satisfies requirements for (1) a potentially unbounded, data archive (5000 TB range) (2) automated workflow management for increased user productivity; (3) automatic tracking and management of files stored on shelves; (4) ability to ingest, process and disseminate data volumes with bandwidths ranging up to multi- gigabit per second; (5) access through a thin client-to-server network environment; (6) multiple interactive users needing retrieval of files in seconds from both archived images or in real time, and (7) scalability that maintains information throughput performance as the size of the digital library grows.

  3. Metadata-based access to multimedia architectural and historical archive collections

    Science.gov (United States)

    Bekaert, Jeroen L.; Van De Ville, Dimitri; Rogge, Boris; Lerouge, Sam; De Sutter, Robbie; De Kooning, Emiel; Van de Walle, Rik

    2002-07-01

    A comprehensive approach to the access of archival collections necessitates the interplay of various types of metadata standards. Each of these standards fulfills its own part within the context of a 'metadata infrastructure'. Besides this, it should be noted that present-day digital libraries are often limited to the management of mainly textual and image-based material. Archival Information Systems dealing with various media types are still very rare. There is a need for a methodology to deal with time-dependant media within an archival context. The aim of our research is to investigate and implement a number of tools supporting the content management multimedia data within digital collections. A flexible and extendible framework is proposed, based on the emerging Metadata Encoding and Transmission Standard (METS). Firstly, we will focus on the description of archival collections according to the archival mandates of provenance for the benefit of an art-historical research in an archive-theoretically correct manner. Secondly, we will examine the description tools that represent the semantics and structure of multimedia data. In this respect, an extension of the present archival metadata framework has been proposed to time-based media content delivered via standards such as the MPEG-7 multimedia content description standard.

  4. Making Czech Historical Radio Archive Accessible and Searchable for Wide Public

    Directory of Open Access Journals (Sweden)

    Jan Nouza

    2012-04-01

    Full Text Available In this paper we describe a complex software platform that is being developed for the automatic transcription and indexation of the Czech Radio archive of spoken documents. The archive contains more than 100.000 hours of audio recordings covering almost ninety years of public broadcasting in the Czech Republic and former Czechoslovakia. The platform is based on modern speech processing technology and includes modules for speech, speaker and language recognition, and tools for multimodal information retrieval. The aim of the project supported by the Czech Ministry of Culture is to make the archive accessible and searchable both for researchers as well as for wide public. After the first project’s year, the key modules have been already implemented and tested on a 27.400-hour subset of the archive. A web-based full-text search engine allows for the demonstration of the project’s current state.

  5. Downscaling Climate Data from Distributed Archives

    Science.gov (United States)

    Radhakrishnan, A.; Guentchev, G.; Cinquini, L.; Schweitzer, R.; Nikonov, S.; Balaji, V.

    2013-12-01

    Model refinement -- numerical estimates of climate change at higher resolution than climate models are currently capable of producing -- is an essential weapon in the arsenal of decision makers and researchers in climate change. We describe here steps toward a general-purpose system for model refinement. We envision a system wherein multiple climate models, alone or in combination, can be used as predictors; multiple refinement methods, alone or in combination, can be deployed and trained, including evaluation within a perfect-model framework, described below; time periods and locations of training can be chosen at will; and providing all of these options as standard web services within the Earth System Grid Federation (ESGF) global data infrastructure for the distribution of climate model output. The perfect-model framework for systematic testing of model refinement using empirical-statistical downscaling (ESD) schemes is being developed at NOAA/GFDL under the National Climate Predictions and Projections Platform (NCPP) project. It uses the approach that Laprise and collaborators call the "big-brother" framework for evaluating dynamical downscaling. High-resolution model output is used as a "nature run" and used in place of observations to train the ESD scheme under testing. The data is interpolated to a coarse grid (the "little brother") and the ESD scheme attempts to downscale and bias-correct the "future", i.e beyond the period of training. The output of ESD can then be rigorously compared to the original nature run on a chosen list of metrics. Initial work was performed in collaboration with Texas Tech University: the high-resolution time-slice models that GFDL submitted to CMIP5 are used as training sets for the downscaling methods developed by Katharine Hayhoe and collaborators. The approach is being extended to using other downscaling schemes, such as BCSD, Delta, quantile mapping, constructed analogs, and machine learning algorithms; and in future to using

  6. Data Archiving and Distribution of LiDAR and Derived Datasets in the Philippines

    Science.gov (United States)

    Tupas, M. E. A.; Lat, S. C.; Magturo, R. A.

    2016-06-01

    LiDAR programs in the Philippines have been generating valuable resource and hazard information for most of the country at a substantial rate since 2012. Significant progress have been made due to the programs design of engaging 16 Universities and research institutions spatially distributed across the country. Because of this, data has been accumulating at a brisk rate which poses significant technical and logistic issues. While a central node, the University of the Philippines, Diliman, handles data acquisition, pre-processing, and quality checking, processing and ground validation are devolved to the various nodes. For this setup to be successful, an efficient data access and distribution system should be in place. In this paper, we discuss the spatial data infrastructure and data access protocols implemented by the program. At the center of the data access and distribution operations is LiPAD or our LiDAR portal for archiving and distribution. LiPAD is built on open source technologies, established web standards, and protocols. At its back-end a central data archive has been established using state of the art Object Storage technology to store both raw, processed Lidar and derived data sets. Catalog of available data sets ranging from data acquisition foot prints, to DEM coverages, to derived products such as flood hazard, and crop suitability are viewable and accessible on the main site based on the popular GeoNode application. Data exchange is performed using varying protocols to address various logistical problems. Given the various challenges the program is successful in distributing data sets not just to partner processing nodes but to other stakeholders where main requesters include national agencies and general research and academic institutions.

  7. Compactly accessible categories and quantum key distribution

    CERN Document Server

    Heunen, Chris

    2008-01-01

    Compact categories have lately seen renewed interest via applications to quantum physics. Being essentially finite-dimensional, they cannot accomodate (co)limit-based constructions. For example, they cannot capture protocols such as quantum key distribution, that rely on the law of large numbers. To overcome this limitation, we introduce the notion of a compactly accessible category, relying on the extra structure of a factorisation system. This notion allows for infinite dimension while retaining key properties of compact categories: the main technical result is that the choice-of-duals functor on the compact part extends canonically to the whole compactly accessible category. As an example, we model a quantum key distribution protocol and prove its correctness categorically.

  8. Distributed Access View Integrated Database (DAVID) system

    Science.gov (United States)

    Jacobs, Barry E.

    1991-01-01

    The Distributed Access View Integrated Database (DAVID) System, which was adopted by the Astrophysics Division for their Astrophysics Data System, is a solution to the system heterogeneity problem. The heterogeneous components of the Astrophysics problem is outlined. The Library and Library Consortium levels of the DAVID approach are described. The 'books' and 'kits' level is discussed. The Universal Object Typer Management System level is described. The relation of the DAVID project with the Small Business Innovative Research (SBIR) program is explained.

  9. Predictive access control for distributed computation

    DEFF Research Database (Denmark)

    Yang, Fan; Hankin, Chris; Nielson, Flemming;

    2013-01-01

    We show how to use aspect-oriented programming to separate security and trust issues from the logical design of mobile, distributed systems. The main challenge is how to enforce various types of security policies, in particular predictive access control policies — policies based on the future...... behavior of a program. A novel feature of our approach is that we can define policies concerning secondary use of data....

  10. Gold Open Access Publishing Must Not Be Allowed to Retard the Progress of Green Open Access Self-Archiving

    OpenAIRE

    Harnad, Stevan

    2010-01-01

    Universal Open Access (OA) is fully within the reach of the global research community: Research institutions and funders need merely mandate (green) OA self-archiving of the final, refereed drafts of all journal articles immediately upon acceptance for publication. The money to pay for gold OA publishing will only become available if universal green OA eventually makes subscriptions unsustainable. Paying for gold OA pre-emptively today, without first having mandated green OA not only squander...

  11. A Review of Open Access Self-Archiving Mandate Policies

    Science.gov (United States)

    Xia, Jingfeng; Gilchrist, Sarah B.; Smith, Nathaniel X. P.; Kingery, Justin A.; Radecki, Jennifer R.; Wilhelm, Marcia L.; Harrison, Keith C.; Ashby, Michael L.; Mahn, Alyson J.

    2012-01-01

    This article reviews the history of open access (OA) policies and examines the current status of mandate policy implementations. It finds that hundreds of policies have been proposed and adopted at various organizational levels and many of them have shown a positive effect on the rate of repository content accumulation. However, it also detects…

  12. GeoCrystal: graphic-interactive access to geodata archives

    Science.gov (United States)

    Goebel, Stefan; Haist, Joerg; Jasnoch, Uwe

    2002-03-01

    Recently there is spent a lot of effort to establish information systems and global infrastructures enabling both data suppliers and users to describe (-> eCommerce, metadata) as well as to find appropriate data. Examples for this are metadata information systems, online-shops or portals for geodata. The main disadvantages of existing approaches are insufficient methods and mechanisms leading users to (e.g. spatial) data archives. This affects aspects concerning usability and personalization in general as well as visual feedback techniques in the different steps of the information retrieval process. Several approaches aim at the improvement of graphical user interfaces by using intuitive metaphors, but only some of them offer 3D interfaces in the form of information landscapes or geographic result scenes in the context of information systems for geodata. This paper presents GeoCrystal, which basic idea is to adopt Venn diagrams to compose complex queries and to visualize search results in a 3D information and navigation space for geodata. These concepts are enhanced with spatial metaphors and 3D information landscapes (library for geodata) wherein users can specify searches for appropriate geodata and are enabled to graphic-interactively communicate with search results (book metaphor).

  13. Distributed medium access control in wireless networks

    CERN Document Server

    Wang, Ping

    2013-01-01

    This brief investigates distributed medium access control (MAC) with QoS provisioning for both single- and multi-hop wireless networks including wireless local area networks (WLANs), wireless ad hoc networks, and wireless mesh networks. For WLANs, an efficient MAC scheme and a call admission control algorithm are presented to provide guaranteed QoS for voice traffic and, at the same time, increase the voice capacity significantly compared with the current WLAN standard. In addition, a novel token-based scheduling scheme is proposed to provide great flexibility and facility to the network servi

  14. Cardea: Dynamic Access Control in Distributed Systems

    Science.gov (United States)

    Lepro, Rebekah

    2004-01-01

    Modern authorization systems span domains of administration, rely on many different authentication sources, and manage complex attributes as part of the authorization process. This . paper presents Cardea, a distributed system that facilitates dynamic access control, as a valuable piece of an inter-operable authorization framework. First, the authorization model employed in Cardea and its functionality goals are examined. Next, critical features of the system architecture and its handling of the authorization process are then examined. Then the S A M L and XACML standards, as incorporated into the system, are analyzed. Finally, the future directions of this project are outlined and connection points with general components of an authorization system are highlighted.

  15. Towards universal access to all knowledge-Internet Archive

    Institute of Scientific and Technical Information of China (English)

    KAHLE Brewster

    2005-01-01

    Advances in computing and communications mean that we can cost-effectively store every book, sound recording,movie, software package, and public Web page ever created, and provide access to these collections via the Internet to students and adults all over the world. By mostly using existing institutions and funding sources, we can build this as well as compensate authors within the current worldwide library budget. We should take advantage of our new technologies and our open societies to make a Universal Library again, and go the next step and make all knowledge easily available to every man, woman and child around the world.

  16. Vaccine production, distribution, access, and uptake.

    Science.gov (United States)

    Smith, Jon; Lipsitch, Marc; Almond, Jeffrey W

    2011-07-30

    For human vaccines to be available on a global scale, complex production methods, meticulous quality control, and reliable distribution channels are needed to ensure that the products are potent and effective at the point of use. The technologies used to manufacture different types of vaccines can strongly affect vaccine cost, ease of industrial scale-up, stability, and, ultimately, worldwide availability. The complexity of manufacturing is compounded by the need for different formulations in different countries and age-groups. Reliable vaccine production in appropriate quantities and at affordable prices is the cornerstone of developing global vaccination policies. However, to ensure optimum access and uptake, strong partnerships are needed between private manufacturers, regulatory authorities, and national and international public health services. For vaccines whose supply is insufficient to meet demand, prioritisation of target groups can increase the effect of these vaccines. In this report, we draw from our experience of vaccine development and focus on influenza vaccines as an example to consider production, distribution, access, and other factors that affect vaccine uptake and population-level effectiveness. PMID:21664680

  17. Research and teaching access to a large clinical picture archiving and communication system

    OpenAIRE

    Harrison, Marc; Koh, Justin; Tran, Steven; Mongkolwat, Patanasak; Channin, David S.

    2001-01-01

    Purpose: To identify practical issues surrounding delivering digital images from picture archiving and communication systems (PACS) for research and teaching purposes. The complexity of Digital Imaging and Communications in Medicine (DICOM) access methods, security, patient confidentiality, PACS database integrity, portability, and scalability are discussed. A software prototype designed to resolve these issues is described.System Architecture: A six-component, three-tier, client server softw...

  18. Multiple-Access Quantum Key Distribution Networks

    CERN Document Server

    Razavi, Mohsen

    2011-01-01

    This paper addresses multi-user quantum key distribution networks, in which any two users can mutually exchange a secret key without trusting any other nodes. The same network also supports conventional classical communications by assigning two different wavelength bands to quantum and classical signals. Time and code division multiple access (CDMA) techniques, within a passive star network, are considered. In the case of CDMA, it turns out that the optimal performance is achieved at a unity code weight. A listen-before-send protocol is then proposed to improve secret key generation rates in this case. Finally, a hybrid setup with wavelength routers and passive optical networks, which can support a large number of users, is considered and analyzed.

  19. The Starchive: An open access, open source archive of nearby and young stars and their planets

    Science.gov (United States)

    Tanner, Angelle; Gelino, Chris; Elfeki, Mario

    2015-12-01

    Historically, astronomers have utilized a piecemeal set of archives such as SIMBAD, the Washington Double Star Catalog, various exoplanet encyclopedias and electronic tables from the literature to cobble together stellar and exo-planetary parameters in the absence of corresponding images and spectra. As the search for planets around young stars through direct imaging, transits and infrared/optical radial velocity surveys blossoms, there is a void in the available set of to create comprehensive lists of the stellar parameters of nearby stars especially for important parameters such as metallicity and stellar activity indicators. For direct imaging surveys, we need better resources for downloading existing high contrast images to help confirm new discoveries and find ideal target stars. Once we have discovered new planets, we need a uniform database of stellar and planetary parameters from which to look for correlations to better understand the formation and evolution of these systems. As a solution to these issues, we are developing the Starchive - an open access stellar archive in the spirit of the open exoplanet catalog, the Kepler Community Follow-up Program and many others. The archive will allow users to download various datasets, upload new images, spectra and metadata and will contain multiple plotting tools to use in presentations and data interpretations. While we will highly regulate and constantly validate the data being placed into our archive the open nature of its design is intended to allow the database to be expanded efficiently and have a level of versatility which is necessary in today's fast moving, big data community. Finally, the front-end scripts will be placed on github and users will be encouraged to contribute new plotting tools. Here, I will introduce the community to the content and expected capabilities of the archive and query the audience for community feedback.

  20. Supporting users through integrated retrieval, processing, and distribution systems at the Land Processes Distributed Active Archive Center

    Science.gov (United States)

    Kalvelage, Thomas A.; Willems, Jennifer

    2005-01-01

    The US Geological Survey's EROS Data Center (EDC) hosts the Land Processes Distributed Active Archive Center (LP DAAC). The LP DAAC supports NASA's Earth Observing System (EOS), which is a series of polar-orbiting and low inclination satellites for long-term global observations of the land surface, biosphere, solid Earth, atmosphere, and oceans. The EOS Data and Information Systems (EOSDIS) was designed to acquire, archive, manage and distribute Earth observation data to the broadest possible user community.

  1. Access to Archived Astronaut Data for Human Research Program Researchers: Update on Progress and Process Improvements

    Science.gov (United States)

    Lee, L. R.; Montague, K. A.; Charvat, J. M.; Wear, M. L.; Thomas, D. M.; Van Baalen, M.

    2016-01-01

    Since the 2010 NASA directive to make the Life Sciences Data Archive (LSDA) and Lifetime Surveillance of Astronaut Health (LSAH) data archives more accessible by the research and operational communities, demand for astronaut medical data has increased greatly. LSAH and LSDA personnel are working with Human Research Program on many fronts to improve data access and decrease lead time for release of data. Some examples include the following: Feasibility reviews for NASA Research Announcement (NRA) data mining proposals; Improved communication, support for researchers, and process improvements for retrospective Institutional Review Board (IRB) protocols; Supplemental data sharing for flight investigators versus purely retrospective studies; Work with the Multilateral Human Research Panel for Exploration (MHRPE) to develop acceptable data sharing and crew consent processes and to organize inter-agency data coordinators to facilitate requests for international crewmember data. Current metrics on data requests crew consenting will be presented, along with limitations on contacting crew to obtain consent. Categories of medical monitoring data available for request will be presented as well as flow diagrams detailing data request processing and approval steps.

  2. Archiving challenges

    OpenAIRE

    Ringersma, J.

    2010-01-01

    Teaching slides on: What is a digital archive? Parties involved in digital archiving Archiving challenges organization of data coherence and persistency access and safety Language archiving software Different users, different needs For: Saami Language Documentation and Revitalization. Winter school, Bodø, Norway

  3. Distributed Access Control Policies for Spectrum Sharing

    OpenAIRE

    Baldini, Gianmarco; NAI-FOVINO Igor; Trombetta, Alberto; Braghin, Stefano

    2012-01-01

    Cognitive Radio (CR) is a novel wireless communication technology that allows for adaptive configuration of the reception parameters of a terminal, based on the information collected from the environment. Cognitive radio (CR) technology can be used in innovative spectrum management approaches like spectrum sharing, where radio frequency spectral bands can be shared among various users through a dynamic exclusive-use spectrum access model. Spectrum sharing can be applied to various...

  4. Distributed Role-based Access Control for Coaliagion Application

    Institute of Scientific and Technical Information of China (English)

    HONG Fan; ZHU Xian; XING Guanglin

    2005-01-01

    Access control in multi-domain environments is one of the important questions of building coalition between domains.On the basis of RBAC access control model, the concepts of role delegation and role mapping are proposed, which support the third-party authorization.Then, a distributed RBAC model is presented.Finally the implementation issues are discussed.

  5. Access to Grey Literature in the Netherlands : Grey Literature at Data Archiving and Networked Services – DANS

    NARCIS (Netherlands)

    Dijk, E.M.S.; Doorn, P.K.

    2015-01-01

    Data Archiving and Networked Services (DANS) is the national Dutch organization for permanent access to research data, with a focus on the humanities and social sciences. DANS offers three services to the scholarly community: DataverseNL, EASY, and NARCIS. DataverseNL is intended to support data man

  6. A prototype data archive for the PIER 'thermal distribution systems in commercial buildings' project

    Energy Technology Data Exchange (ETDEWEB)

    Diamond, Rick C.; Wray, Craig P.; Smith, Brian V.; Dickerhoff, Darryl J.; Matson, Nance E.; Cox, Skylar A.

    2004-01-01

    A prototype archive for a selection of building energy data on thermal distribution systems in commercial buildings was developed and pilot tested. While the pilot demonstrated the successful development of the data archive prototype, several questions remain about the usefulness of such an archive. Specifically, questions on the audience, frequency of use, maintenance, and updating of the archive would need to be addressed before this prototype is taken to the next level.

  7. The size distribution of Open Access publishers – a problem for Open Access?

    OpenAIRE

    Frantsvåg, Jan Erik

    2010-01-01

    I stumbled across the question of publisher size while preparing for an earlier article. From the viewpoint of an economist, the size distribution of open access publishers looked inefficient. In this article I first explore reasons to be sceptical to a situation with a large number of small publishers. Then I go through the numbers from the directory of Open Access Journals, also discussing problems inherent in the material. The results are then compared to similar data about toll access pub...

  8. The EOSDIS Version 0 Distributed Active Archive Center for physical oceanography and air-sea interaction

    Science.gov (United States)

    Hilland, Jeffrey E.; Collins, Donald J.; Nichols, David A.

    1991-01-01

    The Distributed Active Archive Center (DAAC) at the Jet Propulsion Laboratory will support scientists specializing in physical oceanography and air-sea interaction. As part of the NASA Earth Observing System Data and Information System Version 0 the DAAC will build on existing capabilities to provide services for data product generation, archiving, distribution and management of information about data. To meet scientist's immediate needs for data, existing data sets from missions such as Seasat, Geosat, the NOAA series of satellites and the Global Positioning Satellite system will be distributed to investigators upon request. In 1992, ocean topography, wave and surface roughness data from the Topex/Poseidon radar altimeter mission will be archived and distributed. New data products will be derived from Topex/Poseidon and other sensor systems based on recommendations of the science community. In 1995, ocean wind field measurements from the NASA Scatterometer will be supported by the DAAC.

  9. Random-access distributed fiber sensing

    OpenAIRE

    Zadok, Avinoam; Antman, Yair; Primerov, Nikolay; Denisov, Andrey; SANCHO Juan; Thévenaz, Luc

    2012-01-01

    Optical sensing offers an attractive solution to the societal concern for prevention of natural and human-generated threats and for efficient use of natural resources. The unprecedented properties of optical fibers make them ideal for implementing a ‘nervous system’ in structural health monitoring: they are small, low-cost and electrically and chemically inert. In particular, the nonlinear interaction of stimulated Brillouin scattering allows for the distributed measurement of strain and temp...

  10. Development of "ARchive system for Cross-reference Across Distributed Environment (ARCADE)" Based on Shibboleth

    Science.gov (United States)

    Matsuhira, T.; Kasahara, Y.; Takata, Y.

    2011-12-01

    In the fields of Earth and space sciences, large amount of experimental and observation data have been generated day by day. It is quite important not only for researchers in the field but also for general researchers in the other fields to cross-refer and make comprehensive analysis using various kinds of data obtained by many observatories and institutes in order to clarify the global picture of the environment. Under this background, it has been pointed out that we have to construct database systems properly, and establish a procedure with which scientists can easily cross-refer these data across organizational boundaries. Especially in the fields of Earth and space sciences, most researchers carry out their research belonging to scientific projects organized by several laboratories and/or research groups. It is quite difficult to define data access policy to their contents simply as fully open access or subscribers only. That is to say, there are many kinds of data access policy depending on the data. The purpose of this research is to develop a data managing system by which data owner can easily open their own data to the appropriate users across organizational boundaries. In this research, we introduced Shibboleth, which is an open source software based on SAML2.0 protocol for single sign-on across or within organizational boundaries. By using Shibboleth, we developed an application system named ARchive system for Cross-reference Across Distributed Environment (ARCADE). ARCADE is implemented by Java language. It makes possible to share, upload and download data files among closed communities. We also implemented GUI in ARCADE so that any user can utilize the system just using drag-and-drop action. In this poster, we introduce the configuration of our system and discuss its adaptation to an actual setting.

  11. Interactive access to LP DAAC satellite data archives through a combination of open-source and custom middleware web services

    Science.gov (United States)

    Davis, Brian N.; Werpy, Jason; Friesz, Aaron M.; Impecoven, Kevin; Quenzer, Robert; Maiersperger, Tom; Meyer, David J.

    2015-01-01

    Current methods of searching for and retrieving data from satellite land remote sensing archives do not allow for interactive information extraction. Instead, Earth science data users are required to download files over low-bandwidth networks to local workstations and process data before science questions can be addressed. New methods of extracting information from data archives need to become more interactive to meet user demands for deriving increasingly complex information from rapidly expanding archives. Moving the tools required for processing data to computer systems of data providers, and away from systems of the data consumer, can improve turnaround times for data processing workflows. The implementation of middleware services was used to provide interactive access to archive data. The goal of this middleware services development is to enable Earth science data users to access remote sensing archives for immediate answers to science questions instead of links to large volumes of data to download and process. Exposing data and metadata to web-based services enables machine-driven queries and data interaction. Also, product quality information can be integrated to enable additional filtering and sub-setting. Only the reduced content required to complete an analysis is then transferred to the user.

  12. Promotion of Open Access through self-archiving in Sri Lanka: getting experiences from E-LIS

    OpenAIRE

    Garusing Arachchige, J. J.

    2009-01-01

    This paper explores the main features of e-LIS; one of global level subject-based open access archive on Library and Information Sciences, and discusses the potential of obtaining E-LIS experiences to form a national level e-repository of scientific and scholarly resources in Sri Lanka. It is found that only one national level open access e-repository is available in Sri Lanka. It is NSF e-repository and is still in the beginning stage. There are some attempts to approach open access conc...

  13. Population distribution, settlement patterns and accessibility across Africa in 2010.

    Directory of Open Access Journals (Sweden)

    Catherine Linard

    Full Text Available The spatial distribution of populations and settlements across a country and their interconnectivity and accessibility from urban areas are important for delivering healthcare, distributing resources and economic development. However, existing spatially explicit population data across Africa are generally based on outdated, low resolution input demographic data, and provide insufficient detail to quantify rural settlement patterns and, thus, accurately measure population concentration and accessibility. Here we outline approaches to developing a new high resolution population distribution dataset for Africa and analyse rural accessibility to population centers. Contemporary population count data were combined with detailed satellite-derived settlement extents to map population distributions across Africa at a finer spatial resolution than ever before. Substantial heterogeneity in settlement patterns, population concentration and spatial accessibility to major population centres is exhibited across the continent. In Africa, 90% of the population is concentrated in less than 21% of the land surface and the average per-person travel time to settlements of more than 50,000 inhabitants is around 3.5 hours, with Central and East Africa displaying the longest average travel times. The analyses highlight large inequities in access, the isolation of many rural populations and the challenges that exist between countries and regions in providing access to services. The datasets presented are freely available as part of the AfriPop project, providing an evidence base for guiding strategic decisions.

  14. Population distribution, settlement patterns and accessibility across Africa in 2010.

    Science.gov (United States)

    Linard, Catherine; Gilbert, Marius; Snow, Robert W; Noor, Abdisalan M; Tatem, Andrew J

    2012-01-01

    The spatial distribution of populations and settlements across a country and their interconnectivity and accessibility from urban areas are important for delivering healthcare, distributing resources and economic development. However, existing spatially explicit population data across Africa are generally based on outdated, low resolution input demographic data, and provide insufficient detail to quantify rural settlement patterns and, thus, accurately measure population concentration and accessibility. Here we outline approaches to developing a new high resolution population distribution dataset for Africa and analyse rural accessibility to population centers. Contemporary population count data were combined with detailed satellite-derived settlement extents to map population distributions across Africa at a finer spatial resolution than ever before. Substantial heterogeneity in settlement patterns, population concentration and spatial accessibility to major population centres is exhibited across the continent. In Africa, 90% of the population is concentrated in less than 21% of the land surface and the average per-person travel time to settlements of more than 50,000 inhabitants is around 3.5 hours, with Central and East Africa displaying the longest average travel times. The analyses highlight large inequities in access, the isolation of many rural populations and the challenges that exist between countries and regions in providing access to services. The datasets presented are freely available as part of the AfriPop project, providing an evidence base for guiding strategic decisions. PMID:22363717

  15. Montreal Archive of Sleep Studies: an open-access resource for instrument benchmarking and exploratory research.

    Science.gov (United States)

    O'Reilly, Christian; Gosselin, Nadia; Carrier, Julie; Nielsen, Tore

    2014-12-01

    Manual processing of sleep recordings is extremely time-consuming. Efforts to automate this process have shown promising results, but automatic systems are generally evaluated on private databases, not allowing accurate cross-validation with other systems. In lacking a common benchmark, the relative performances of different systems are not compared easily and advances are compromised. To address this fundamental methodological impediment to sleep study, we propose an open-access database of polysomnographic biosignals. To build this database, whole-night recordings from 200 participants [97 males (aged 42.9 ± 19.8 years) and 103 females (aged 38.3 ± 18.9 years); age range: 18-76 years] were pooled from eight different research protocols performed in three different hospital-based sleep laboratories. All recordings feature a sampling frequency of 256 Hz and an electroencephalography (EEG) montage of 4-20 channels plus standard electro-oculography (EOG), electromyography (EMG), electrocardiography (ECG) and respiratory signals. Access to the database can be obtained through the Montreal Archive of Sleep Studies (MASS) website (http://www.ceams-carsm.ca/en/MASS), and requires only affiliation with a research institution and prior approval by the applicant's local ethical review board. Providing the research community with access to this free and open sleep database is expected to facilitate the development and cross-validation of sleep analysis automation systems. It is also expected that such a shared resource will be a catalyst for cross-centre collaborations on difficult topics such as improving inter-rater agreement on sleep stage scoring. PMID:24909981

  16. JPL Physical Oceanography Distributed Active Archive Center (PO.DAAC) data availability, version 1-94

    Science.gov (United States)

    1994-01-01

    The Physical Oceanography Distributed Active Archive Center (PO.DAAC) archive at the Jet Propulsion Laboratory (JPL) includes satellite data sets for the ocean sciences and global-change research to facilitate multidisciplinary use of satellite ocean data. Parameters include sea-surface height, surface-wind vector, sea-surface temperature, atmospheric liquid water, and integrated water vapor. The JPL PO.DAAC is an element of the Earth Observing System Data and Information System (EOSDIS) and is the United States distribution site for Ocean Topography Experiment (TOPEX)/POSEIDON data and metadata.

  17. ACE: A distributed system to manage large data archives

    Science.gov (United States)

    Daily, Mike I.; Allen, Frank W.

    1993-01-01

    Competitive pressures in the oil and gas industry are requiring a much tighter integration of technical data into E and P business processes. The development of new systems to accommodate this business need must comprehend the significant numbers of large, complex data objects which the industry generates. The life cycle of the data objects is a four phase progression from data acquisition, to data processing, through data interpretation, and ending finally with data archival. In order to implement a cost effect system which provides an efficient conversion from data to information and allows effective use of this information, an organization must consider the technical data management requirements in all four phases. A set of technical issues which may differ in each phase must be addressed to insure an overall successful development strategy. The technical issues include standardized data formats and media for data acquisition, data management during processing, plus networks, applications software, and GUI's for interpretation of the processed data. Mass storage hardware and software is required to provide cost effective storage and retrieval during the latter three stages as well as long term archival. Mobil Oil Corporation's Exploration and Producing Technical Center (MEPTEC) has addressed the technical and cost issues of designing, building, and implementing an Advanced Computing Environment (ACE) to support the petroleum E and P function, which is critical to the corporation's continued success. Mobile views ACE as a cost effective solution which can give Mobile a competitive edge as well as a viable technical solution.

  18. Accessing the quark orbital angular momentum with Wigner distributions

    Energy Technology Data Exchange (ETDEWEB)

    Lorce, Cedric [IPNO, Universite Paris-Sud, CNRS/IN2P3, 91406 Orsay, France and LPT, Universite Paris-Sud, CNRS, 91406 Orsay (France); Pasquini, Barbara [Dipartimento di Fisica, Universita degli Studi di Pavia, Pavia, Italy and Istituto Nazionale di Fisica Nucleare, Sezione di Pavia, Pavia (Italy)

    2013-04-15

    The quark orbital angular momentum (OAM) has been recognized as an important piece of the proton spin puzzle. A lot of effort has been invested in trying to extract it quantitatively from the generalized parton distributions (GPDs) and the transverse-momentum dependent parton distributions (TMDs), which are accessed in high-energy processes and provide three-dimensional pictures of the nucleon. Recently, we have shown that it is more natural to access the quark OAM from the phase-space or Wigner distributions. We discuss the concept of Wigner distributions in the context of quantum field theory and show how they are related to the GPDs and the TMDs. We summarize the different definitions discussed in the literature for the quark OAM and show how they can in principle be extracted from the Wigner distributions.

  19. Accessing the quark orbital angular momentum with Wigner distributions

    CERN Document Server

    Cedric, Lorce

    2012-01-01

    The quark orbital angular momentum (OAM) has been recognized as an important piece of the proton spin puzzle. A lot of effort has been invested in trying to extract it quantitatively from the generalized parton distributions (GPDs) and the transverse-momentum dependent parton distributions (TMDs), which are accessed in high-energy processes and provide three-dimensional pictures of the nucleon. Recently, we have shown that it is more natural to access the quark OAM from the phase-space or Wigner distributions. We discuss the concept of Wigner distributions in the context of quantum field theory and show how they are related to the GPDs and the TMDs. We summarize the different definitions discussed in the literature for the quark OAM and show how they can in principle be extracted from the Wigner distributions.

  20. Accessing the quark orbital angular momentum with Wigner distributions

    International Nuclear Information System (INIS)

    The quark orbital angular momentum (OAM) has been recognized as an important piece of the proton spin puzzle. A lot of effort has been invested in trying to extract it quantitatively from the generalized parton distributions (GPDs) and the transverse-momentum dependent parton distributions (TMDs), which are accessed in high-energy processes and provide three-dimensional pictures of the nucleon. Recently, we have shown that it is more natural to access the quark OAM from the phase-space or Wigner distributions. We discuss the concept of Wigner distributions in the context of quantum field theory and show how they are related to the GPDs and the TMDs. We summarize the different definitions discussed in the literature for the quark OAM and show how they can in principle be extracted from the Wigner distributions.

  1. Data catalog for JPL Physical Oceanography Distributed Active Archive Center (PO.DAAC)

    Science.gov (United States)

    Digby, Susan

    1995-01-01

    The Physical Oceanography Distributed Active Archive Center (PO.DAAC) archive at the Jet Propulsion Laboratory contains satellite data sets and ancillary in-situ data for the ocean sciences and global-change research to facilitate multidisciplinary use of satellite ocean data. Geophysical parameters available from the archive include sea-surface height, surface-wind vector, surface-wind speed, surface-wind stress vector, sea-surface temperature, atmospheric liquid water, integrated water vapor, phytoplankton pigment concentration, heat flux, and in-situ data. PO.DAAC is an element of the Earth Observing System Data and Information System and is the United States distribution site for TOPEX/POSEIDON data and metadata.

  2. Accessing the quark orbital angular momentum with Wigner distributions

    OpenAIRE

    Cedric LorceIPNO and LPT, Orsay; Barbara Pasquini(Pavia U. and INFN, Pavia)

    2015-01-01

    The quark orbital angular momentum (OAM) has been recognized as an important piece of the proton spin puzzle. A lot of effort has been invested in trying to extract it quantitatively from the generalized parton distributions (GPDs) and the transverse-momentum dependent parton distributions (TMDs), which are accessed in high-energy processes and provide three-dimensional pictures of the nucleon. Recently, we have shown that it is more natural to access the quark OAM from the phase-space or Wig...

  3. Archiving and Distributing Three Long-Term Interconnected Geospatial Data Sets

    Science.gov (United States)

    Repeat remote sensing field campaigns at experimental sites result in a valuable set of remote sensing data resources, geographic information systems (GIS) data sets, digitized maps, and tabular data that are tied to specific locations. Archiving and distributing these geospatial data generally bec...

  4. European digital archive on soil maps (EuDASM): preserving important soil data for public free access

    OpenAIRE

    PANAGOS Panagiotis; Jones, Arwyn; BOSCO CLAUDIO; Kumar, S

    2011-01-01

    Historical soil survey paper maps are valuable resources that underpin strategies to support soil protection and promote sustainable land use practices, especially in developing countries where digital soil information is often missing. However, many of the soil maps, in particular those for developing countries, are held in traditional archives that are not easily accessible to potential users. Additionally, many of these documents are over 50 years old and are beginning to deteriorate. R...

  5. Web Services Implementations at Land Process and Goddard Earth Sciences Distributed Active Archive Centers

    Science.gov (United States)

    Cole, M.; Bambacus, M.; Lynnes, C.; Sauer, B.; Falke, S.; Yang, W.

    2007-12-01

    NASA's vast array of scientific data within its Distributed Active Archive Centers (DAACs) is especially valuable to both traditional research scientists as well as the emerging market of Earth Science Information Partners. For example, the air quality science and management communities are increasingly using satellite derived observations in their analyses and decision making. The Air Quality Cluster in the Federation of Earth Science Information Partners (ESIP) uses web infrastructures of interoperability, or Service Oriented Architecture (SOA), to extend data exploration, use, and analysis and provides a user environment for DAAC products. In an effort to continually offer these NASA data to the broadest research community audience, and reusing emerging technologies, both NASA's Goddard Earth Science (GES) and Land Process (LP) DAACs have engaged in a web services pilot project. Through these projects both GES and LP have exposed data through the Open Geospatial Consortiums (OGC) Web Services standards. Reusing several different existing applications and implementation techniques, GES and LP successfully exposed a variety data, through distributed systems to be ingested into multiple end-user systems. The results of this project will enable researchers world wide to access some of NASA's GES & LP DAAC data through OGC protocols. This functionality encourages inter-disciplinary research while increasing data use through advanced technologies. This paper will concentrate on the implementation and use of OGC Web Services, specifically Web Map and Web Coverage Services (WMS, WCS) at GES and LP DAACs, and the value of these services within scientific applications, including integration with the DataFed air quality web infrastructure and in the development of data analysis web applications.

  6. Distributed Learning Policies for Power Allocation in Multiple Access Channels

    OpenAIRE

    Mertikopoulos, Panayotis; Belmega, Elena V.; Moustakas, Aris L.; Lasaulce, Samson

    2011-01-01

    We analyze the problem of distributed power allocation for orthogonal multiple access channels by considering a continuous non-cooperative game whose strategy space represents the users' distribution of transmission power over the network's channels. When the channels are static, we find that this game admits an exact potential function and this allows us to show that it has a unique equilibrium almost surely. Furthermore, using the game's potential property, we derive a modified version of t...

  7. Acquisition, archiving, and analysis of Doublet III in diagnostic data on a distributed computer system

    International Nuclear Information System (INIS)

    Computer support of a tokamak fusion experiment for the purpose of data acquisition, analysis, and archiving required handling the large amounts of data generated each shot, and presenting the data for both individual diagnostic experiments and shot summary in a timely and useful manner. A distributed computer system with processing at three levels supports General Atomic's Doublet III tokamak by providing: (1) acquisition and permanent archiving of all diagnostic data, (2) analysis and control for each physics diagnostic, (3) overall shot summary after each shot, and (4) detailed analysis of current and post shot data

  8. Archiving and distributing earth-science data with the PANGAEA information system

    OpenAIRE

    Grobe, Hannes; Diepenbroek, Michael; Dittert, Nicolas; Reinke, Manfred; Sieger, Rainer

    2006-01-01

    The information system PANGAEA - Publishing Network for Geoscientific & Environmental Data (http://www.pangaea.de) is aimed at archiving, publishing, and distributing data related to climate variability, the marine environment, and the solid earth. The system is a public 'data library' distributing data to the scientific community through the Internet. Data are stored in a relational database in a consistent format with related meta-information following international standards. Data are geor...

  9. fedOA, Open access archives a "Federico II" University of Naples

    OpenAIRE

    Bacchini, Maria Rosaria

    2006-01-01

    In this paper the Author illustrates the Institutional Repository of “Federico II” Naples University: fedOA. This archive was developed since 2004 and it has been officially introduced in November 2005 based on GNU EPrints software. This software use got the possibility too go through the following aspects: - Eprint type - Metadata set - Fulltext format type supported Moreover, FedOA archive will contain all the research doctorate e-theses and furthermore even all the Univers...

  10. GSL: An Open Source Framework for the Rapid Development of Data Archive Access Services

    Science.gov (United States)

    McWhirter, J.; Boler, F. M.; Bock, Y.; Squibb, M. B.; Ratzesberger, L.

    2011-12-01

    The Geodetic Seamless Archive Center (GSAC) project is a NASA ROSES ACCESS funded effort with the goal to define and implement a web service API for uniform querying across multiple geodetic data repositories. The project information technology partners include two International GNSS Service (IGS) Data Centers, CDDIS and SOPAC, and a third global NSF and NASA-funded Data Center, UNAVCO. A science partner, the University of Nevada, Reno Geodetic Laboratory is utilizing the services and contributing new quality assessment products. Each of the participant data centers has its own internal database schema and various web-based access mechanisms to suit the needs of their individual user communities. The software engineering challenge that we faced was to unify these access mechanisms into a common web service API. To facilitate the development of the GSAC interfaces within these disparate repositories we have developed a Java-based open source middleware framework called the GSAC Service Layer (GSL). It was recognized early on in the project that much of the required functionality within each repository could be provided by a common software layer, thus achieving a substantial reduction in the development effort required by each partner institution. The GSL provides a range of common services for repository configuration, initialization, database management, web interface generation, and data model and metadata creation. Each repository implementation then simply focuses on the core task of responding to query requests and delivering to the GSL layer the internal results. The GSL layer is then responsible for encoding the results in the desired format. A fundamental challenge in developing a framework such as the GSL is balancing the trade-off between the agnosticism needed within the GSL so that it is applicable to a wide range of problem domains and the specific needs required for a particular repository implementations. The GSL addresses this challenge through an

  11. Implementing Access to Data Distributed on Many Processors

    Science.gov (United States)

    James, Mark

    2006-01-01

    A reference architecture is defined for an object-oriented implementation of domains, arrays, and distributions written in the programming language Chapel. This technology primarily addresses domains that contain arrays that have regular index sets with the low-level implementation details being beyond the scope of this discussion. What is defined is a complete set of object-oriented operators that allows one to perform data distributions for domain arrays involving regular arithmetic index sets. What is unique is that these operators allow for the arbitrary regions of the arrays to be fragmented and distributed across multiple processors with a single point of access giving the programmer the illusion that all the elements are collocated on a single processor. Today's massively parallel High Productivity Computing Systems (HPCS) are characterized by a modular structure, with a large number of processing and memory units connected by a high-speed network. Locality of access as well as load balancing are primary concerns in these systems that are typically used for high-performance scientific computation. Data distributions address these issues by providing a range of methods for spreading large data sets across the components of a system. Over the past two decades, many languages, systems, tools, and libraries have been developed for the support of distributions. Since the performance of data parallel applications is directly influenced by the distribution strategy, users often resort to low-level programming models that allow fine-tuning of the distribution aspects affecting performance, but, at the same time, are tedious and error-prone. This technology presents a reusable design of a data-distribution framework for data parallel high-performance applications. Distributions are a means to express locality in systems composed of large numbers of processor and memory components connected by a network. Since distributions have a great effect on the performance of

  12. A Distributed MAC Protocol for Cooperation in Random Access Networks

    CERN Document Server

    Böcherer, Georg

    2008-01-01

    WLAN is one of the most successful applications of wireless communications in daily life because of low cost and ease of deployment. The enabling technique for this success is the use of random access schemes for the wireless channel. Random access requires minimal coordination between the nodes, which considerably reduces the cost of the infrastructure. Recently, cooperative communication in wireless networks has been of increasing interest because it promises higher rates and reliability. An additional MAC overhead is necessary to coordinate the nodes to allow cooperation and this overhead can possibly cancel out the cooperative benefits. In this work, a completely distributed protocol is proposed that allows nodes in the network to cooperate via Two-Hop and Decode-and-Forward for transmitting their data to a common gateway node. It is shown that high throughput gains are obtained in terms of the individual throughput that can be guaranteed to any node in the network. These results are validated by Monte Ca...

  13. Rnomads: An R Interface with the NOAA Operational Model Archive and Distribution System

    Science.gov (United States)

    Bowman, D. C.; Lees, J. M.

    2014-12-01

    The National Oceanic and Atmospheric Administration Operational Model Archive and Distribution System (NOMADS) facilitates rapid delivery of real time and archived environmental data sets from multiple agencies. These data are distributed free to the scientific community, industry, and the public. The rNOMADS package provides an interface between NOMADS and the R programming language. Like R itself, rNOMADS is open source and cross platform. It utilizes server-side functionality on the NOMADS system to subset model outputs for delivery to client R users. There are currently 57 real time and 10 archived models available through rNOMADS. Atmospheric models include the Global Forecast System and North American Mesoscale. Oceanic models include WAVEWATCH III and U. S. Navy Operational Global Ocean Model. rNOMADS has been downloaded 1700 times in the year since it was released. At the time of writing, it is being used for wind and solar power modeling, climate monitoring related to food security concerns, and storm surge/inundation calculations, among others. We introduce this new package and show how it can be used to extract data for infrasonic waveform modeling in the atmosphere.

  14. The Bias-Corrected Taxonomic Distribution of Mission-Accessible Small Near-Earth Objects

    Science.gov (United States)

    Hinkle, Mary L.; Moskovitz, Nicholas; Trilling, David; Binzel, Richard P.; Thomas, Cristina; Christensen, Eric; DeMeo, Francesca; Person, Michael J.; Polishook, David; Willman, Mark

    2015-11-01

    Although they are thought to compose the majority of the Near-Earth object (NEO) population, the small (d Accessible Near-Earth Object Survey (MANOS) began in August 2013 as a multi-year physical characterization survey that was awarded survey status by NOAO. MANOS will target several hundred mission-accessible NEOs across visible and near-infrared wavelengths, ultimately providing a comprehensive catalog of physical properties (astrometry, light curves, spectra).Fifty-seven small, mission-accessible NEAs were observed between mid 2013 and mid 2015 using GMOS at Gemini North & South observatories as well as the DeVeny spectrograph at Lowell Observatory's Discovery Channel Telescope. Archival data of 43 objects from the MIT-UH-IRTF Joint Campaign for NEO Spectral Reconnaissance (PI R. Binzel) were also used. Taxonomic classifications were obtained by fitting our spectra to the mean reflectance spectra of the Bus asteroid taxonomy (Bus & Binzel 2002). Small NEAs are the likely progenitors of meteorites; an improved understanding of the abundance of meteorite parent body types in the NEO population improves understanding of how the two populations are related as well as the biases Earth's atmosphere imposes upon the meteorite collection.We present classifications for these objects as well as results for the debiased distribution of taxa(as a proxy for composition) as a function of object size and compare to the observed fractions of ordinary chondritemeteorites and asteroids with d > 1 km. Amongst the smallest NEOs we find an unexpected distribution of taxonomic types that differs from both large NEOs and meteorites.We acknowledge funding support from NASA NEOO grant number NNX14AN82G.

  15. Greening radio access networks using distributed base station architectures

    DEFF Research Database (Denmark)

    Kardaras, Georgios; Soler, José; Dittmann, Lars

    2010-01-01

    Several actions for developing environmentally friendly technologies have been taken in most industrial fields. Significant resources have also been devoted in mobile communications industry. Moving towards eco-friendly alternatives is primarily a social responsibility for network operators....... However besides this, increasing energy efficiency represents a key factor for reducing operating expenses and deploying cost effective mobile networks. This paper presents how distributed base station architectures can contribute in greening radio access networks. More specifically, the advantages of...... introducing remote radio head modules are discussed. Substantial flexibility is provided in terms of power consumption, as a result of combining efficient hardware with intelligent software. Additionally, it is underlined that designing eco-sustainable systems needs to follow a holistic approach towards...

  16. Distributed cloud association in downlink multicloud radio access networks

    KAUST Repository

    Dahrouj, Hayssam

    2015-03-01

    This paper considers a multicloud radio access network (M-CRAN), wherein each cloud serves a cluster of base-stations (BS\\'s) which are connected to the clouds through high capacity digital links. The network comprises several remote users, where each user can be connected to one (and only one) cloud. This paper studies the user-to-cloud-assignment problem by maximizing a network-wide utility subject to practical cloud connectivity constraints. The paper solves the problem by using an auction-based iterative algorithm, which can be implemented in a distributed fashion through a reasonable exchange of information between the clouds. The paper further proposes a centralized heuristic algorithm, with low computational complexity. Simulations results show that the proposed algorithms provide appreciable performance improvements as compared to the conventional cloud-less assignment solutions. © 2015 IEEE.

  17. WATER TEMPERATURE and Other Data from FIXED PLATFORM From World-Wide Distribution from 19860101 to 19880630 (NODC Accession 8800250)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The accession contains drifting buoy data archived by Marine Environmental Data Service (MEDS), Canada. The data were collected between January 1986 and June 1988....

  18. The IRIS DMC: Perspectives on Real-Time Data Management and Open Access From a Large Seismological Archive: Challenges, Tools, and Quality Assurance

    Science.gov (United States)

    Benson, R. B.

    2007-05-01

    The IRIS Data Management Center, located in Seattle, WA, is the largest openly accessible geophysical archive in the world, and has a unique perspective on data management and operational practices that gets the most out of your network. Networks scale broad domains in time and space, from finite needs to monitor bridges and dams to national and international networks like the GSN and the FDSN that establish a baseline for global monitoring and research, the requirements that go into creating a well-tuned DMC archive treat these the same, building a collaborative network of networks that generations of users rely on and adds value to the data. Funded by the National Science Foundation through the Division of Earth Sciences, IRIS is operated through member universities and in cooperation with the USGS, and the DMS facility is a bridge between a globally distributed collaboration of seismic networks and an equally distributed network of users that demand a high standard for data quality, completeness, and ease of access. I will describe the role that a perpetual archive has in the life cycle of data, and how hosting real-time data performs a dual role of being a hub for continuous data from approximately 59 real-time networks, and distributing these (along with other data from the 40-year library of available time-series data) to researchers, while simultaneously providing shared data back to networks in real- time that benefits monitoring activities. I will describe aspects of our quality-assurance framework that are both passively and actively performed on 1100 seismic stations, generating over 6,000 channels of regularly sampled data arriving daily, that data providers can use as aids in operating their network, and users can likewise use when requesting suitable data for research purposes. The goal of the DMC is to eliminate bottlenecks in data discovery and shortening the steps leading to analysis. This includes many challenges, including keeping metadata

  19. Distributed Medium Access Control with SDMA Support for WLANs

    Science.gov (United States)

    Zhou, Sheng; Niu, Zhisheng

    With simultaneous multi-user transmissions, spatial division multiple access (SDMA) provides substantial throughput gain over the single user transmission. However, its implementation in WLANs with contention-based IEEE 802.11 MAC remains challenging. Problems such as coordinating and synchronizing the multiple users need to be solved in a distributed way. In this paper, we propose a distributed MAC protocol for WLANs with SDMA support. A dual-mode CTS responding mechanism is designed to accomplish the channel estimation and user synchronization required for SDMA. We analytically study the throughput performance of the proposed MAC, and dynamic parameter adjustment is designed to enhance the protocol efficiency. In addition, the proposed MAC protocol does not rely on specific physical layer realizations, and can work on legacy IEEE 802.11 equipment with slight software updates. Simulation results show that the proposed MAC outperforms IEEE 802.11 significantly, and that the dynamic parameter adjustment can effectively track the load variation in the network.

  20. A mandate to self archive? The role of open access institutional repositories

    OpenAIRE

    Pinfield, Stephen

    2005-01-01

    This paper argues that the best way to achieve major improvements in scholarly communication in the short and medium term is to make it mandatory to deposit research papers in open access institutional repositories. This is what the House of Commons Science and Technology Committee report of 2004 on scientific publishing recommended. The paper defines what open access repositories are and explains why they should be institutional. It also deals with question of what should be deposited in ...

  1. Final (or Maybe Not So Final) Archiving of Solar Physics Data: Assuring the Validity of and Access to Data in the Post-NSSDC Epoch

    Science.gov (United States)

    Gurman, Joseph B.; Spencer, Jennifer L

    2014-06-01

    Historically, NASA's National Space Science Data Center was responsible for the long-term preservation, periodic revalidation and recording medium transfer of, and access to, older space solar physics data sets. The NSSDC is fading from view, however, and the Heliophysics Data Management Policy calls for discipline-specific “final archives,” where “final” somehow means less final than a “long-term archive.”The Solar Data Analysis Center may be tasked with the “final” archiving of space solar physics data sets, but we have no expertise in the data preservation activities traditionally carried out by the NSSDC. We also recognize that the largest space solar physics data set, the SDO AIA and HMI data at the Stanford Joint Science and Operations Center (JSOC), will also need preservation and long-term access, as will the potentially much larger data archive of DKIST observations. We have therefore begun a study of data archiving best practices in other disciplines and organizations, including NASA’s Space Physics Data Facility (SPDF), the National Institute of Standard and Technology (NIST), and private industry. We report on the lessons learned so far, and possible cost models. We seek input from the broader solar physics community on the relative value of various levels of preservation effort.

  2. A digital archiving system and distributed server-side processing of large datasets

    Science.gov (United States)

    Jomier, Julien; Aylward, Stephen R.; Marion, Charles; Lee, Joowhi; Styner, Martin

    2009-02-01

    In this paper, we present MIDAS, a web-based digital archiving system that processes large collections of data. Medical imaging research often involves interdisciplinary teams, each performing a separate task, from acquiring datasets to analyzing the processing results. Moreover, the number and size of the datasets continue to increase every year due to recent advancements in acquisition technology. As a result, many research laboratories centralize their data and rely on distributed computing power. We created a web-based digital archiving repository based on openstandards. The MIDAS repository is specifically tuned for medical and scientific datasets and provides a flexible data management facility, a search engine, and an online image viewer. MIDAS enables users to run a set of extensible image processing algorithms from the web to the selected datasets and to add new algorithms to the MIDAS system, facilitating the dissemination of users' work to different research partners. The MIDAS system is currently running in several research laboratories and has demonstrated its ability to streamline the full image processing workflow from data acquisition to image analysis and reports.

  3. Information access, income distribution, and the Environmental Kuznets Curve

    International Nuclear Information System (INIS)

    Recent empirical studies have tested the hypothesis of an Environmental Kuznets Curve (EKC) focusing primarily on the relationship between per capita income and certain types of pollutant emissions. Given the stock-nature of many pollution problems, emissions only partially account for the environmental impacts. Moreover, almost all of the studies have given consideration to little more than income levels as explanatory variables. This paper empirically tests the hypothesis of the EKC existence for a stock-sensitive indicator, that is, the percentage of protected area (PA) within national territory. It does theorize that economic growth is a necessary condition in order to better address environmental issues. But it also stresses that other variables (income distribution, education, information accessibility) may play a fundamental role in determining environmental quality. Contrary to other studies that mainly focus on the calculation of the income level corresponding to the transition point, this paper is more concerned with the calculation of environmental quality corresponding to that transition point, that is, the minimum level of environmental quality that a country is willing to accept. This paper highlights the idea that if the transition point is determined primarily by income level, social policies determine the level of environmental quality corresponding to that point

  4. Volume server: A scalable high speed and high capacity magnetic tape archive architecture with concurrent multi-host access

    Science.gov (United States)

    Rybczynski, Fred

    1993-01-01

    A major challenge facing data processing centers today is data management. This includes the storage of large volumes of data and access to it. Current media storage for large data volumes is typically off line and frequently off site in warehouses. Access to data archived in this fashion can be subject to long delays, errors in media selection and retrieval, and even loss of data through misplacement or damage to the media. Similarly, designers responsible for architecting systems capable of continuous high-speed recording of large volumes of digital data are faced with the challenge of identifying technologies and configurations that meet their requirements. Past approaches have tended to evaluate the combination of the fastest tape recorders with the highest capacity tape media and then to compromise technology selection as a consequence of cost. This paper discusses an architecture that addresses both of these challenges and proposes a cost effective solution based on robots, high speed helical scan tape drives, and large-capacity media.

  5. Accessing the online archive for the Journal of the Royal Naval Medical Service.

    Science.gov (United States)

    Angus, D

    2015-01-01

    Following work by the editorial team, notably Surg Lt Cdr M O'Shea, and with funding from the Wellcome Trust, every edition of this Journal dating back to the first edition in 1915 is available on our website. This article gives details of how to access it. PMID:26867403

  6. Delivery, Management and Access Model for E-prints and Open Access Journals within Further and Higher Education

    OpenAIRE

    Swan, Alma; Needham, Paul; Probets, Steve; Muir, Adrienne; Oppenheim, Charles; O’Brien, Ann; Hardy, Rachel; Rowland, Fytton

    2005-01-01

    This study identified three models for open access provision in the UK: (a) the centralised model,where e-prints of articles are first deposited directly into a national archive and then madeaccessible to users and service providers; (b) the distributed model, where e-prints are depositedin any one of a distributed network of OAI-compliant institutional, subject-based and open-access journal archives, whose metadata are then harvested and made accessible to users and serviceproviders; and ...

  7. Virtual Oregon: A Proof-of-Concept for Seamless Access to Distributed Environmental Information

    Science.gov (United States)

    Keon, D.; Pancake, C.; Wright, D. J.; Walsh, K.

    2002-12-01

    Virtual Oregon is a new data coordination center established at Oregon State University in order to: (1) archive environmental and other place-based data on Oregon and associated areas; (2) make those data accessible to a broad spectrum of agencies and individuals via innovative web interfaces; (3) identify key data sets that are not yet available and encourage their collection and dissemination; and (4) facilitate development of statewide standards for archiving, documenting, and disseminating data. Rather than co-locating researchers and data in a physical center, Virtual Oregon employs a distributed architecture that occupies multiple locations while users are presented with the illusion of a single, centralized facility. This approach was selected not just to maximize the impact on campus students, faculty, and staff but also to service broader interactions with extension agents and other members of Oregon State's statewide community. Virtual Oregon builds on regional GIS centers and databanks in a wide range of disciplines, providing decades of research data on topics as varied as coastal processes, climate, biodiversity, land ownership, water quality, wildfire, and agricultural production. There are four distributed nodes, each serving as a center and clearinghouse for distinct types of information and services: - Department of Geosciences (College of Science): geospatial coverages, digital aerial and ortho imagery and associated base data - Forestry Sciences Laboratory (USDA Forest Service and Oregon State's College of Forestry): ecological and resource management databases; data analyses; data from computational simulations - Northwest Alliance for Computational Science and Engineering (NACSE): databases based on specimen collections, field observation, images, or analysis of historical documents; user interface design - Valley Library: published maps, books and archival publications, gray literature, photographs and video Data are harvested from a variety

  8. Organising for digital archiving: new distribution models in the scientific information chain

    OpenAIRE

    Mackenzie Owen, John

    1998-01-01

    Digital archiving is a concept that has little to do with archives in the conventional sense. It is most often used to refer to the role of libraries for the long-term storage and preservation of published information in digital form. The subject of this paper is therefore how libraries should organise the archiving function in a way that will ensure the availability of scientific publications for future generations.

  9. ScienceCentral: open access full-text archive of scientific journals based on Journal Article Tag Suite regardless of their languages

    OpenAIRE

    Huh, Sun

    2013-01-01

    ScienceCentral, a free or open access, full-text archive of scientific journal literature at the Korean Federation of Science and Technology Societies, was under test in September 2013. Since it is a Journal Article Tag Suite-based full text database, extensible markup language files of all languages can be presented, according to Unicode Transformation Format 8-bit encoding. It is comparable to PubMed Central: however, there are two distinct differences. First, its scope comprises all scienc...

  10. DCC Briefing Paper: Database archiving

    OpenAIRE

    Müller, Heiko

    2009-01-01

    In a computational context, data archiving refers to the storage of electronic documents, data sets, multimedia files, and so on, for a defined period of time. Database archiving is usually seen as a subset of data archiving. Database archiving focuses on archiving data that are maintained under the control of a database management system and structured under a database schema, e.g., a relational database. The primary goal of database archiving is to maintain access to data in case it is late...

  11. Access to Archives in Post-Communist Countries: The Victim’s Perspective

    Directory of Open Access Journals (Sweden)

    Gruodytė Edita

    2015-10-01

    Full Text Available The collapse of the communist regime at the end of the twentieth century resulted in a wave of democratization in Central and Eastern Europe. While trying to establish democracy, many states in this region had to demonstrate their ability to protect human rights and to deal with the past of the repressive regime. As these states decided to join various human rights instruments they also became subject to certain obligations towards their people. One of these obligations is the requirement to provide remedies in case of human rights abuses, and the right to know the truth is recognized as part of it. Therefore the goal of this article is to identify the abilities of the victim of the communist regime to access the files of former secret services in post-communist countries in the light of the right to know the truth. The answer is provided using an analysis of international documents, historic, comparative and systemic methods, providing and evaluating the practice of different states dealing with the files of former secret services or government files of the repressive past and academic literature.

  12. Customer Support Operations In Support Of The NASA/JPL Physical Oceanography Distributed Active Archive Center (PO.DAAC)

    Science.gov (United States)

    Heinz, S. L.; Chen, Y. M.

    2004-12-01

    PO.DAAC is responsible for the ingest, archive and distribution of data relevant to the physical state of the ocean. The PO.DAAC provides a level of service for customer support for core Earth Observing System Data Information System (EOSDIS) missions such as TOPEX/POSEIDON, Jason, SeaWinds on QuikSCAT, SeaWinds on ADEOS-II, NOAA AVHRR and MODIS. PO.DAAC's level of support has broadened recently to include missions outside of the EOSDIS including, WindSat, GHRSST, Naval Oceanographic, Monterey Bay Aquarium, AirSAR and GOES. Customer support operations is managed and conducted in partnership between Raytheon ITSS and JPL and includes a full complement of services to accommodate the various PO.DAAC and Earth Observing System user communities. Customer support activities are ubiquitous to service industries from banking to shopping and this presentation will detail how two operational applications have been adopted for use in Earth Science data communities. Customer Response Management Operations System Integrated system that combines PO.DAAC's communications channels including web, email, phone and personal interactions into one intelligent knowledge base. The knowledge is shared with customers and the entire team to deliver consistent and timely information. The system allows 24 x 7 customer support service via extensive on-line searchable knowledge base. PO.DAAC has customized the system to fully integrate with PO.DAAC's existing legacy database and order tracking system. Website Communication Channel The newly redesigned PO.DAAC website (http://podaac.jpl.nasa.gov) is the central gateway to all of the Data, Tools and Services offered at the data center. The consistent look and feel was developed to enhance the ease of searching and ordering earth science data in particular. Data is accessible within a few clicks using the improved dynamic data catalog interface. New data products and information are delivered quickly to customers via the dynamic system and

  13. Data Information for Global Change Studies: NASA's Distributed Active Archive Centers and Cooperating Data Centers

    Science.gov (United States)

    2000-01-01

    The Earth Observing System (EOS) is an integral part of the National Aeronautics and Space Administration's (NASA's) Earth Science Enterprise (ESE). ESE is a long-term global change research program designed to improve our understanding of the Earth's interrelated processes involving the atmosphere, oceans, land surfaces, and polar regions. Data from EOS instruments and other Earth science measurement systems are useful in understanding the causes and processes of global climate change and the consequences of human activities. The EOS Data and Information System (EOSDIS) provides a structure for data management and user services for products derived from EOS satellite instruments and other NASA Earth science data. Within the EOSDIS framework, the Distributed Active Archive Centers (DAACs) have been established to provide expertise in one or more Earth science disciplines. The DAACs and cooperating data centers provide data and information services to support the global change research community. Much of the development of the DAACs has been in anticipation of the enormous amount of data expected from EOS instruments to be launched within the next two decades. Terra, the EOS flagship launched in December 1999, is the first of a series of EOS satellites to carry several instruments with multispectral capabilities. Some data products from these instruments are now available from several of the DAACs. These and other data products can be ordered through the EOS Data Gateway (EDG) and DAAC-specific online ordering systems.

  14. Scheduling with Bus Access Optimization for Distributed Embedded Systems

    DEFF Research Database (Denmark)

    Eles, Petru; Doboli, Alex; Pop, Paul;

    2000-01-01

    of control. Our goal is to derive a worst case delay by which the system completes execution, such that this delay is as small as possible; to generate a logically and temporally deterministic schedule; and to optimize parameters of the communication protocol such that this delay is guaranteed. We......, generates an efficient bus access scheme as well as the schedule tables for activation of processes and communications....

  15. Distributed Storage Codes Meet Multiple-Access Wiretap Channels

    CERN Document Server

    Papailiopoulos, Dimitris S

    2010-01-01

    We consider {\\it i)} the overhead minimization of maximum-distance separable (MDS) storage codes for the repair of a single failed node and {\\it ii)} the total secure degrees-of-freedom (S-DoF) maximization in a multiple-access compound wiretap channel. We show that the two problems are connected. Specifically, the overhead minimization for a single node failure of an {\\it optimal} MDS code, i.e. one that can achieve the information theoretic overhead minimum, is equivalent to maximizing the S-DoF in a multiple-access compound wiretap channel. Additionally, we show that maximizing the S-DoF in a multiple-access compound wiretap channel is equivalent to minimizing the overhead of an MDS code for the repair of a departed node. An optimal MDS code maps to a full S-DoF channel and a full S-DoF channel maps to an MDS code with minimum repair overhead for one failed node. We also state a general framework for code-to-channel and channel-to-code mappings and performance bounds between the two settings. The underlyin...

  16. ETD Preservation Survey Results: MetaArchive and NDLTD Collaborate to Provide a Distributed Preservation Network for ETDs

    OpenAIRE

    McMillan, Gail

    2008-01-01

    Because many universities now welcome or require ETDs from their graduate students, institutions must ensure that these works will be at least as available and enduring as they were when libraries and archives preserved the bound print volumes on their shelves. To this end, the Networked Digital Library of Theses and Dissertations sponsored an online survey to help gauge the digital library community's interest in a distributed digital preservation network (DDPN) specifically f...

  17. A Distributed Intranet/Web Solution to Integrated Management of Access Networks

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    In this article, we describe the present situation of access network management, enumerate a few problems during the development of network management systems, then put forward a distributed Intranet/Web solution named iMAN to the integrated management of access networks, present its architecture and protocol stack, and describe its application in practice.

  18. The Design Workshop Archive and Digital Collection: A Collaboration Broadening Discovery, Access and Use of Design Materials

    OpenAIRE

    Walters, Cheryl D.; Cole, Bradford R.; Skindelien, Sara; Osborne, Hillary

    2012-01-01

    This presentation deals with the Design Workshop Archive and Digital Collection, a collaborative project of Utah State University Libraries, the University's Landscape Architecture & Environmental Planning Dept. and Design Workshop, a landscape architectural firm based in Denver, Colorado. The story of this project is told from the above three perspectives. Issues discussed include evolution of protocols to assist firm principals in determining which projects and materials should be archived,...

  19. JISC Open Access Briefing Paper

    OpenAIRE

    Swan, Alma

    2005-01-01

    What Open Access is. What Open Access is not. How is Open Access provided? Open Access archives or repositories. Open Access journals. Why should authors provide Open Access to their work? Further information and resources

  20. A Distributed Metadata Management, Data Discovery and Access System

    CERN Document Server

    Palanisamy, Giriprakash; Green, Jim; Wilson, Bruce

    2010-01-01

    Mercury is a federated metadata harvesting, search and retrieval tool based on both open source and software developed at Oak Ridge National Laboratory. It was originally developed for NASA, and the Mercury development consortium now includes funding from NASA, USGS, and DOE. A major new version of Mercury was developed during 2007. This new version provides orders of magnitude improvements in search speed, support for additional metadata formats, integration with Google Maps for spatial queries, support for RSS delivery of search results, among other features. Mercury provides a single portal to information contained in disparate data management systems. It collects metadata and key data from contributing project servers distributed around the world and builds a centralized index. The Mercury search interfaces then allow the users to perform simple, fielded, spatial and temporal searches across these metadata sources. This centralized repository of metadata with distributed data sources provides extremely fa...

  1. Distributed data access in the sequential access model at the D0 experiment at Fermilab

    International Nuclear Information System (INIS)

    The authors present the Sequential Access Model (SAM), which is the data handling system for D0, one of two primary High Energy Experiments at Fermilab. During the next several years, the D0 experiment will store a total of about 1 PByte of data, including raw detector data and data processed at various levels. The design of SAM is not specific to the D0 experiment and carries few assumptions about the underlying mass storage level; its ideas are applicable to any sequential data access. By definition, in the sequential access mode a user application needs to process a stream of data, by accessing each data unit exactly once, the order of data units in the stream being irrelevant. The units of data are laid out sequentially in files. The adopted model allows for significant optimizations of system performance, decrease of user file latency and increase of overall throughput. In particular, caching is done with the knowledge of all the files needed in the near future, defined as all the files of the already running or submitted jobs. The bulk of the data is stored in files on tape in the mass storage system (MSS) called Enstore[2] and also developed at Fermilab. (The tape drives are served by an ADIC AML/2 Automated Tape Library). At any given time, SAM has a small fraction of the data cached on disk for processing. In the present paper, the authors discuss how data is delivered onto disk and how it is accessed by user applications. They will concentrate on data retrieval (consumption) from the MSS; when SAM is used for storing of data, the mechanisms are rather symmetrical. All of the data managed by SAM is cataloged in great detail in a relational database (ORACLE). The database also serves as the persistency mechanism for the SAM servers described in this paper. Any client or server in the SAM system which needs to store or retrieve information from the database does so through the interfaces of a CORBA-based database server. The users (physicists) use the

  2. Application of Public Ledgers to Revocation in Distributed Access Control

    OpenAIRE

    Bui, Thanh; Aura, Tuomas

    2016-01-01

    There has recently been a flood of interest in potential new applications of blockchains, as well as proposals for more generic designs called public ledgers. Most of the novel proposals have been in the financial sector. However, the public ledger is an abstraction that solves several of the fundamental problems in the design of secure distributed systems: global time in the form of a strict linear order of past events, globally consistent and immutable view of the history, and enforcement o...

  3. Gaussian Approximation for the Wireless Multi-access Interference Distribution and Its Applications

    CERN Document Server

    Inaltekin, Hazer

    2012-01-01

    This paper investigates the problem of Gaussian approximation for the wireless multi-access interference distribution in large spatial wireless networks. First, a principled methodology is presented to establish rates of convergence of the multi-access interference distribution to a Gaussian distribution for general bounded and power-law decaying path-loss functions. The model is general enough to also include various random wireless channel dynamics such as fading and shadowing arising from multipath propagation and obstacles existing in the communication environment. It is shown that the wireless multi-access interference distribution converges to the Gaussian distribution with the same mean and variance at a rate $\\frac{1}{\\sqrt{\\lambda}}$, where $\\lambda>0$ is a parameter controlling the intensity of the planar (possibly non-stationary) Poisson point process generating node locations. An explicit expression for the scaling coefficient is obtained as a function of fading statistics and the path-loss functi...

  4. The Influence of Building Distributed Archival Database Sys-tem on Archival Com-pilation%分布式档案数据库系统的建立及其对档案编研的影响

    Institute of Scientific and Technical Information of China (English)

    郑慧; 覃筱媚

    2014-01-01

    At the beginning of twenty- first Century, archival compilation under the network be-came one of the hot issues.How-ever, people paid little attention on the distributed archival data-base system applying on the ar-chive compilation. By setting the audience module, archival original database module, the experts module, editing module, the dis-tributed archival database system can have a positive impact on the archival compilation work, archival compilation products dissemina-tion and the open range and it will play an important role on the fu-ture of the archival compilation.%21世纪初,网络环境下的档案编研就成为人们关注的热点问题之一。然而,人们对将分布式档案数据库系统应用于档案编研缺乏足够的关注。分布式档案数据库系统通过分别设置受众模块、档案原文数据库模块、专家模块、编研模块,对档案编研工作环节、档案编研成果传播、档案编研成果开放范围均产生一定积极影响,将对未来的档案编研工作起到重要作用。

  5. Unit 20 - GIS as Archives

    OpenAIRE

    Unit 03, CC in GIS; National Center for Geographic Information and Analysis (UC Santa Barbara, SUNY at Buffalo, University of Maine)

    1990-01-01

    This unit introduces the idea of a GIS database serving as a project or archive database, contrasting it with the traditional geographic archive, the map library. It discusses issues of data currency, justifying the need for digital geographic archives, suitability of data for archiving, platforms, distribution, user interface and costs vs. benefits of digital archives. It illustrates these issues with several examples of spatial data archive systems.

  6. Strategic pricing of grid access under partial price-caps. Electricity distribution in England and Wales

    International Nuclear Information System (INIS)

    It is perceived in public debate that monopolistic network operators (who are vertically integrated into competitively organised activities) would raise excessive access charges to derail competition by newcomers. Economic reasoning, however, suggests that the level of access charges is, at least in a simple setting, irrelevant for the intensity of entry by newcomers. In a setting where access charges are price-cap regulated, theoretical considerations and empirical findings for the case of electricity distribution in England and Wales even suggest that inefficiently high access charges correspond with intense market entry. Efficiency concerns remain, nonetheless. If regulated by a practicable partial price-cap, the network operator may enforce monopolistic access charges in certain market segments. Access charges in other segments may be lowered strategically and may even be cross-subsidised. 36 refs

  7. The GTC Public Archive

    Science.gov (United States)

    Alacid, J. Manuel; Solano, Enrique

    2015-12-01

    The Gran Telescopio Canarias (GTC) archive is operational since November 2011. The archive, maintained by the Data Archive Unit at CAB in the framework of the Spanish Virtual Observatory project, provides access to both raw and science ready data and has been designed in compliance with the standards defined by the International Virtual Observatory Alliance (IVOA) to guarantee a high level of data accessibility and handling. In this presentation I will describe the main capabilities the GTC archive offers to the community, in terms of functionalities and data collections, to carry out an efficient scientific exploitation of GTC data.

  8. JPL Physical Oceanography Distributed Active Archive Center (PODAAC) Extract Granules API

    Data.gov (United States)

    National Aeronautics and Space Administration — PO.DAAC provides several ways to discover and access physical oceanography data, from the PO.DAAC Web Portal to FTP access to front-end user interfaces (see...

  9. JPL Physical Oceanography Distributed Active Archive Center (PODAAC) Granules Metadata API

    Data.gov (United States)

    National Aeronautics and Space Administration — PO.DAAC provides several ways to discover and access physical oceanography data, from the PO.DAAC Web Portal to FTP access to front-end user interfaces (see...

  10. JPL Physical Oceanography Distributed Active Archive Center (PODAAC) Image Granules API

    Data.gov (United States)

    National Aeronautics and Space Administration — PO.DAAC provides several ways to discover and access physical oceanography data, from the PO.DAAC Web Portal to FTP access to front-end user interfaces (see...

  11. JPL Physical Oceanography Distributed Active Archive Center (PODAAC) Dataset Search API

    Data.gov (United States)

    National Aeronautics and Space Administration — PO.DAAC provides several ways to discover and access physical oceanography data, from the PO.DAAC Web Portal to FTP access to front-end user interfaces (see...

  12. JPL Physical Oceanography Distributed Active Archive Center (PODAAC) Web Services API

    Data.gov (United States)

    National Aeronautics and Space Administration — PO.DAAC provides several ways to discover and access physical oceanography data, from the PO.DAAC Web Portal to FTP access to front-end user interfaces (see...

  13. Bus Access Optimization for Distributed Embedded Systems Based on Schedulability Analysis

    DEFF Research Database (Denmark)

    Pop, Paul; Eles, Petru; Peng, Zebo

    2000-01-01

    We present an approach to bus access optimization and schedulability analysis for the synthesis of hard real-time distribution embedded systems. The communication model is based on a time-triggered protocol. We have developed an analysis for the communication delays proposing four different message...... scheduling policies over a time-triggered communication channel. Optimization strategies for the bus access scheme are developed, and the four approaches to message scheduling are compared using extensive experiments....

  14. Comparison between distributed and centralized demand assignment TDMA satellite access schemes

    OpenAIRE

    Celandroni, Nedo; Ferro, Erina; Potort?, Francesco

    1996-01-01

    This paper presents the performance measurements from a comparison between FODAIIBEA and two other satellite access schemes, FEEDERS and DRIFS. The three schemes differ in terms of the scheduling of the channel capacity: Le. centralized control in FODA/IBEA and distributed in the other two. All these access schemes were designed at CNUCE, where the simulation tool used for the comparison was also developed. FODA/IBEA was developed and tested on several satellites (Olympus, Eutelsat and Italsa...

  15. Analysis of the 802.11e Enhanced Distributed Channel Access Function

    OpenAIRE

    Inan, Inanc; Keceli, Feyza; Ayanoglu, Ender

    2007-01-01

    The IEEE 802.11e standard revises the Medium Access Control (MAC) layer of the former IEEE 802.11 standard for Quality-of-Service (QoS) provision in the Wireless Local Area Networks (WLANs). The Enhanced Distributed Channel Access (EDCA) function of 802.11e defines multiple Access Categories (AC) with AC-specific Contention Window (CW) sizes, Arbitration Interframe Space (AIFS) values, and Transmit Opportunity (TXOP) limits to support MAC-level QoS and prioritization. We propose an analytical...

  16. The NERIES Data Portal : building a distributed heterogeneous data search, access, and processing tool set

    Science.gov (United States)

    Kamb, Linus; Spinuso, Alessandro; Frobert, Laurent; Trani, Luca; Bossu, Remy; van Eck, Torild

    2010-05-01

    The NERIES project (NEtwork of Research Infrastructures for European Seismology) is an EC-funded Integrated Infrastructure Initiative (I3) under the 6th Framework Programme developed to integrate data and service resources for the seismological community. The NERIES data portal (http://www.seismicportal.eu) provides a single integrated point of access to distributed data sets available from several of the NERIES activities. The data portal aggregates data search and access tools from several NERIES participants within a unified access point. These tools operate in a coordinated manner to provide a cohesive distributed search environment, linking data search and access across multiple data providers. In addition, the portal provides a platform from which to integrate access to external tools and processing centers. The NERIES data portal is architected as a collection of JSR-168-compliant web portlets operating at the respective data centers, and supported by a distributed collection of web services. The portlets access both local and remote web data services. The data services are exposed through standard HTTP access mechanisms and are thus available for direct access by other external clients. This allows the creation of independent applications that access the data center holdings directly through these exposed web data services. The nature of the portlet standard allows the NERIES portlets to be included, using remote portlet technologies, in outside portal efforts, offering an opportunity to leverage and reuse existing tools. Ongoing efforts will continue to build on the successes and building-blocks of the NERIES project to further develop an integrated data access model to provide a foundation on which to build access to external processing resources and data utilities, and to broaden the range of data sets accessible through the portal. With an integrated data access model, a data workbench is built in which users can define custom personalized data sets

  17. Data Archive Project

    OpenAIRE

    Kemppainen, Timo-Pekka

    2015-01-01

    In the modern world, digital data archiving and accessing is an issue that needs tailored solutions. This thesis gives one example of designing and implementing a data archiving solution using time tested technologies. Helsinki Metropolia University of Applied Sciences had a need to archive their contracts in digital format instead of using old file cabinets. Specifications were created together with the customer at the start of the project. The project was to produce a complete product fo...

  18. GIS TECHNIQUES FOR ASSESSING THE LINK BETWEEN HUMAN ACCESSIBILITY AND TERRITORIAL DISTRIBUTION OF THE POPULATION IN HUNEDOARA COUNTY

    OpenAIRE

    R. COSTACHE; Popescu, C; A. ȘTEFAN

    2014-01-01

    GIS Techniques for Assessing the Link between Human Accessibility and Territorial Distribution of the Population in Hunedoara County. The accessibility of an area has a very important role in the territorial distribution of the population in an area. In the present study, in order to determine the human accessibility index, some physical-geographical factors were taken into account. A link between accessibility and population density was established, based on data and maps obtained using GIS ...

  19. Information system architecture to support transparent access to distributed, heterogeneous data sources

    International Nuclear Information System (INIS)

    Quality situation assessment and decision making require access to multiple sources of data and information. Insufficient accessibility to data exists for many large corporations and Government agencies. By utilizing current advances in computer technology, today's situation analyst's have a wealth of information at their disposal. There are many potential solutions to the information accessibility problem using today's technology. The United States Department of Energy (US-DOE) faced this problem when dealing with one class of problem in the US. The result of their efforts has been the creation of the Tank Waste Information Network System -- TWINS. The TWINS solution combines many technologies to address problems in several areas such as User Interfaces, Transparent Access to Multiple Data Sources, and Integrated Data Access. Data related to the complex is currently distributed throughout several US-DOE installations. Over time, each installation has adopted their own set of standards as related to information management. Heterogeneous hardware and software platforms exist both across the complex and within a single installation. Standards for information management vary between US-DOE mission areas within installations. These factors contribute to the complexity of accessing information in a manner that enhances the performance and decision making process of the analysts. This paper presents one approach taken by the DOE to resolve the problem of distributed, heterogeneous, multi-media information management for the HLW Tank complex. The information system architecture developed for the DOE by the TWINS effort is one that is adaptable to other problem domains and uses

  20. Channel access delay and buffer distribution of two-user opportunistic scheduling schemes in wireless networks

    KAUST Repository

    Hossain, Md Jahangir

    2010-07-01

    In our earlier works, we proposed rate adaptive hierarchical modulation-assisted two-best user opportunistic scheduling (TBS) and hybrid two-user scheduling (HTS) schemes. The proposed schemes are innovative in the sense that they include a second user in the transmission opportunistically using hierarchical modulations. As such the frequency of information access of the users increases without any degradation of the system spectral efficiency (SSE) compared to the classical opportunistic scheduling scheme. In this paper, we analyze channel access delay of an incoming packet at the base station (BS) buffer when our proposed TBS and HTS schemes are employed at the BS. Specifically, using a queuing analytic model we derive channel access delay as well as buffer distribution of the packets that wait at BS buffer for down-link (DL) transmission. We compare performance of the TBS and HTS schemes with that of the classical single user opportunistic schemes namely, absolute carrier-to-noise ratio (CNR)-based single user scheduling (ASS) and normalized CNR-based single user scheduling (NSS). For an independent and identically distributed (i.i.d.) fading environment, our proposed scheme can improve packet\\'s access delay performance compared to the ASS. Selected numerical results in an independent but non-identically distributed (i.n.d.) fading environment show that our proposed HTS achieves overall good channel access delay performance. © 2010 IEEE.

  1. Online archives of Science

    CERN Multimedia

    GS Department

    2009-01-01

    CERN Library has enabled till 26th June 2009 a trial access to the online archives of Science, starting in 1880. You are welcome to test this resource at http://www.sciencemag.org/archive/ Please contact mailto:Anne.Gentil-Beccot@cern.ch, for any feedback to share.

  2. Modeling the video distribution link in the Next Generation Optical Access Networks

    DEFF Research Database (Denmark)

    Amaya, F; Cárdenas, A; Tafur Monroy, Idelfonso

    2011-01-01

    consider in the model the effect of distributed Raman amplification, used to extent the capacity and the reach of the optical link. In the model, we use the nonlinear Schrödinger equation with the purpose to obtain capacity limitations and design constrains of the next generation optical access networks....

  3. Unequal access to higher education in the Czech Republic: the role of spatial distribution of universities

    Czech Academy of Sciences Publication Activity Database

    Franta, Michal; Guzi, Martin

    -, č. 350 (2008), s. 1-56. ISSN 1211-3298 R&D Projects: GA MŠk LC542 Institutional research plan: CEZ:AV0Z70850503 Keywords : access to tertiary education * human capital * spatial distribution Subject RIV: AH - Economics http://www.cerge-ei.cz/pdf/wp/Wp350.pdf

  4. Bus Access Optimisation for FlexRay-based Distributed Embedded Systems

    DEFF Research Database (Denmark)

    Pop, Traian; Pop, Paul; Eles, Petru; Peng, Zebo

    -real time communication in a deterministic manner. In this paper, we propose techniques for optimising the FlexRay bus access mechanism of a distributed system, so that the hard real-time deadlines are met for all the tasks and messages in the system. We have evaluated the proposed techniques using...

  5. How and Why To Free All Refereed Research From Access- and Impact-Barriers Online, Now

    CERN Document Server

    Harnad, S; Brody, T

    2001-01-01

    Researchers publish their findings in order to make an impact on research, not in order to sell their words. Access-tolls are barriers to research impact. Authors can now free their refereed research papers from all access tolls immediately by self-archiving them on-line in their own institution's Eprint Archives. Free eprints.org software creates Archives compliant with the Open Archives Initiative metadata-tagging Protocol OAI 1.0. These distributed institutional Archives are interoperable and can hence be harvested into global "virtual" archives, citation-linked and freely navigable by all. Self-archiving should enhance research productivity and impact as well as providing powerful new ways of monitoring and measuring it.

  6. Animation archives: collaboration with archivists, academics, and practitioners

    OpenAIRE

    Taylor, Rebekah

    2015-01-01

    How animation archives can be promoted and made accessible through collaboration - the paper looks at workshops in collaboration with academics, interviews with academics using archives, and infographics.

  7. The CHORDS Portal: Lowering the Barrier for Internet Collection, Archival and Distribution of Real-Time Geophysical Observations

    Science.gov (United States)

    Martin, C.; Dye, M. J.; Daniels, M. D.; Keiser, K.; Maskey, M.; Graves, S. J.; Kerkez, B.; Chandrasekar, V.; Vernon, F.

    2015-12-01

    The Cloud-Hosted Real-time Data Services for the Geosciences (CHORDS) project tackles the challenges of collecting and disseminating geophysical observational data in real-time, especially for researchers with limited IT budgets and expertise. The CHORDS Portal is a component that allows research teams to easily configure and operate a cloud-based service which can receive data from dispersed instruments, manage a rolling archive of the observations, and serve these data to any client on the Internet. The research group (user) creates a CHORDS portal simply by running a prepackaged "CHORDS appliance" on Amazon Web Services. The user has complete ownership and management of the portal. Computing expenses are typically very small. RESTful protocols are employed for delivering and fetching data from the portal, which means that any system capable of sending an HTTP GET message is capable of accessing the portal. A simple API is defined, making it straightforward for non-experts to integrate a diverse collection of field instruments. Languages with network access libraries, such as Python, sh, Matlab, R, IDL, Ruby and JavaScript (and most others) can retrieve structured data from the portal with just a few lines of code. The user's private portal provides a browser-based system for configuring, managing and monitoring the health of the integrated real-time system. This talk will highlight the design goals, architecture and agile development of the CHORDS Portal. A running portal, with operational data feeds from across the country, will be presented.

  8. Global data bases on distribution, characteristics and methane emission of natural wetlands: Documentation of archived data tape

    Science.gov (United States)

    Matthews, Elaine

    1989-01-01

    Global digital data bases on the distribution and environmental characteristics of natural wetlands, compiled by Matthews and Fung (1987), were archived for public use. These data bases were developed to evaluate the role of wetlands in the annual emission of methane from terrestrial sources. Five global 1 deg latitude by 1 deg longitude arrays are included on the archived tape. The arrays are: (1) wetland data source, (2) wetland type, (3) fractional inundation, (4) vegetation type, and (5) soil type. The first three data bases on wetland locations were published by Matthews and Fung (1987). The last two arrays contain ancillary information about these wetland locations: vegetation type is from the data of Matthews (1983) and soil type from the data of Zobler (1986). Users should consult original publications for complete discussion of the data bases. This short paper is designed only to document the tape, and briefly explain the data sets and their initial application to estimating the annual emission of methane from natural wetlands. Included is information about array characteristics such as dimensions, read formats, record lengths, blocksizes and value ranges, and descriptions and translation tables for the individual data bases.

  9. Equity in Distribution of Health Care Resources; Assessment of Need and Access, Using Three Practical Indicators.

    Directory of Open Access Journals (Sweden)

    Habib Omrani-Khoo

    2013-11-01

    Full Text Available Equitable distribution of health system resources has been a serious challenge for long ago among the health policy makers. Conducted studies have mostly ever had emphasis on equality rather than equity. In this paper we have attempted to examine both equality and equity in resources distribution.This is an applied and descriptive study in which we plotted Lorenz and concentration curves to describe graphically the distribution of hemodialysis beds and nephrologists as two complementary resources in health care in relation to hemodialysis patients. To end this, inequality and inequity were measured by calculating Gini- coefficient, concentration and Robin Hood indices. We used STATA and EXCEL software to calculate indicators.The results showed that inequality was not seen in hemodialysis beds in population level. However, distribution of nephrologists without considering population needs was accompanied with some sort of inequality. Gini- coefficient for beds and nephrologists distribution in population level was respectively 0.02 and 0.38. Hence, calculation of concentration index for distribution of hemodialysis beds and nephrologists with regard to population needs indicated that unlike beds distribution, equity gap between nephrologists distribution against patients distribution among the provinces was considerably significant again.Our results imply that although hemodialysis beds in Iran have been distributed in connection with the population need, nephrologists' distribution is not the same as hemodialysis beds one and this imbalance in complementary resources, can affect both efficiency and equitable access to services for population.

  10. Distributed SIR-Aware Opportunistic Access Control for D2D Underlaid Cellular Networks

    OpenAIRE

    Chen, Zheng; Kountouris, Marios

    2014-01-01

    In this paper, we propose a distributed interference and channel-aware opportunistic access control technique for D2D underlaid cellular networks, in which each potential D2D link is active whenever its estimated signal-to-interference ratio (SIR) is above a predetermined threshold so as to maximize the D2D area spectral efficiency. The objective of our SIR-aware opportunistic access scheme is to provide sufficient coverage probability and to increase the aggregate rate of D2D links by harnes...

  11. Addressing Data Access Needs of the Long-tail Distribution of Geoscientists

    Science.gov (United States)

    Malik, T.; Foster, I.

    2012-12-01

    Geoscientists must increasingly consider data from multiple disciplines and make intelligent connections between the data in order to advance research frontiers in mission critical problems. As a first step towards making timely and relevant connections, scientists require data and resource access, made available through simple and efficient protocols and web services that allows them to conveniently transmit, acquire, process, and inspect data and metadata. The last decade witnessed some vital data and resource access barriers being crossed. "Big iron" data infrastructures enabled geoscientists with large volumes of simulation and observational datasets, protocols made data access convenient, and strong governing bodies ensured standards for interoperability, repeatability and auditability. All this remarkable growth in access, however, addresses needs of publishers of large data and ignores consumers of that data. To-date limited access mechanisms exist for the consumers, who fetch subsets, analyze them, and, more often than not, generate new data and analysis, which finally gets published in scientific articles. In this session, we will highlight the data access needs of the long-tail distribution of geoscientists and a state-of-the art cyber-infrastructure approaches proposed to address those needs. The needs and the state-of-the-art arose from discussions held with geoscientists as part of the EarthCube Data Access Workshop, which was coordinated by the authors. Our presentation will summarize the proceedings of the Data Access workshop. It will present qualifying characteristics of solutions that will continue to serve the needs of these scientists in the long-term. Finally, we will present some cyber-infrastructure efforts in building such solutions and also provide a vision of the future CI in which such solutions can be useful.

  12. Distributed Rate Allocation Policies for Multi-Homed Video Streaming over Heterogeneous Access Networks

    CERN Document Server

    Zhu, Xiaoqing; Singh, Jatinder Pal; Alpcan, Tansu; Girod, Bernd

    2010-01-01

    We consider the problem of rate allocation among multiple simultaneous video streams sharing multiple heterogeneous access networks. We develop and evaluate an analytical framework for optimal rate allocation based on observed available bit rate (ABR) and round-trip time (RTT) over each access network and video distortion-rate (DR) characteristics. The rate allocation is formulated as a convex optimization problem that minimizes the total expected distortion of all video streams. We present a distributed approximation of its solution and compare its performance against H-infinity optimal control and two heuristic schemes based on TCP-style additive-increase-multiplicative decrease (AIMD) principles. The various rate allocation schemes are evaluated in simulations of multiple high-definition (HD) video streams sharing multiple access networks. Our results demonstrate that, in comparison with heuristic AIMD-based schemes, both media-aware allocation and H-infinity optimal control benefit from proactive congesti...

  13. Analysis of the 802.11e Enhanced Distributed Channel Access Function

    CERN Document Server

    Inan, Inanc; Ayanoglu, Ender

    2007-01-01

    The IEEE 802.11e standard revises the Medium Access Control (MAC) layer of the former IEEE 802.11 standard for Quality-of-Service (QoS) provision in the Wireless Local Area Networks (WLANs). The Enhanced Distributed Channel Access (EDCA) function of 802.11e defines multiple Access Categories (AC) with AC-specific Contention Window (CW) sizes, Arbitration Interframe Space (AIFS) values, and Transmit Opportunity (TXOP) limits to support MAC-level QoS and prioritization. We propose an analytical model for the EDCA function which incorporates an accurate CW, AIFS, and TXOP differentiation at any traffic load. The proposed model is also shown to capture the effect of MAC layer buffer size on the performance. Analytical and simulation results are compared to demonstrate the accuracy of the proposed approach for varying traffic loads, EDCA parameters, and MAC layer buffer space.

  14. Information system architecture to support transparent access to distributed, heterogeneous data sources

    Energy Technology Data Exchange (ETDEWEB)

    Brown, J.C.

    1994-08-01

    Quality situation assessment and decision making require access to multiple sources of data and information. Insufficient accessibility to data exists for many large corporations and Government agencies. By utilizing current advances in computer technology, today`s situation analyst`s have a wealth of information at their disposal. There are many potential solutions to the information accessibility problem using today`s technology. The United States Department of Energy (US-DOE) faced this problem when dealing with one class of problem in the US. The result of their efforts has been the creation of the Tank Waste Information Network System -- TWINS. The TWINS solution combines many technologies to address problems in several areas such as User Interfaces, Transparent Access to Multiple Data Sources, and Integrated Data Access. Data related to the complex is currently distributed throughout several US-DOE installations. Over time, each installation has adopted their own set of standards as related to information management. Heterogeneous hardware and software platforms exist both across the complex and within a single installation. Standards for information management vary between US-DOE mission areas within installations. These factors contribute to the complexity of accessing information in a manner that enhances the performance and decision making process of the analysts. This paper presents one approach taken by the DOE to resolve the problem of distributed, heterogeneous, multi-media information management for the HLW Tank complex. The information system architecture developed for the DOE by the TWINS effort is one that is adaptable to other problem domains and uses.

  15. Distributed Joint Source-Channel Coding on a Multiple Access Channel with Side Information

    OpenAIRE

    R. Rajesh; Sharma, Vinod

    2008-01-01

    We consider the problem of transmission of several distributed sources over a multiple access channel (MAC) with side information at the sources and the decoder. Source-channel separation does not hold for this channel. Sufficient conditions are provided for transmission of sources with a given distortion. The source and/or the channel could have continuous alphabets (thus Gaussian sources and Gaussian MACs are special cases). Various previous results are obtained as special cases. We also pr...

  16. The distributive impact of Vietnam’s accession to the WTO

    OpenAIRE

    Cling, Jean-Pierre; Marouani, Mohamed Ali; Razafindrakoto, Mireille; Robilliard, Anne-Sophie; Roubaud, François

    2009-01-01

    The strong growth of the Vietnamese economy over the last two decades has brought about sweeping economic and social changes. In particular, there has been a sharp downturn in poverty along with an upturn in social inequalities (albeit not as sharp as in China). This makes the question of the distributional impact of the country’s WTO accession (January 2007) a particularly keen one. The firs simulations made using our micro-simulation model point to mainly four types of redistributive effect...

  17. The Vietnam’s terms of accession and distributional impact of WTO membership

    OpenAIRE

    Jean-Pierre Cling; Mohamed Ali Marouani; Mireille Razafindrakoto; Anne-Sophie Robilliard; François Roubaud

    2008-01-01

    (english) The strong growth of the Vietnamese economy over the last two decades has brought about sweeping economic and social changes. In particular, there has been a sharp downturn in poverty along with an upturn in social inequalities (albeit not as sharp as in China). This makes the question of the distributional impact of the country’s WTO accession (January 2007) a particularly keen one. The first simulations made using our micro-simulation model point to mainly four types of redistribu...

  18. Vietnam’s terms of accession and distributional impact of WTO membership

    OpenAIRE

    Cling, Jean-Pierre; Marouani, Mohamed Ali; Razafindrakoto, Mireille; Robilliard, Anne-Sophie; Roubaud, François

    2008-01-01

    The strong growth of the Vietnamese economy over the last two decades has brought about sweeping economic and social changes. In particular, there has been a sharp downturn in poverty along with an upturn in social inequalities (albeit not as sharp as in China). This makes the question of the distributional impact of the country’s WTO accession (January 2007) a particularly keen one. The first simulations made using our micro-simulation model point to mainly four types of redistributive effec...

  19. Supporting the Construction of Workflows for Biodiversity Problem-Solving Accessing Secure, Distributed Resources

    OpenAIRE

    Pahwa, J.S.; Jones, A. C.; White, R.J.; BURGESS, M.; Gray, W.A.; Fiddian, N. J.; Smith, R. O.; Hardisty, A.R.; Sutton, T.; Brewer, P; Yesson, C.; Caithness, N.; Culham, A.; Bisby, F.A.; Scoble, M.

    2006-01-01

    In the Biodiversity World (BDW) project we have created a flexible and extensible Web Services-based Grid environment for biodiversity researchers to solve problems in biodiversity and analyse biodiversity patterns. In this environment, heterogeneous and globally distributed biodiversity-related resources such as data sets and analytical tools are made available to be accessed and assembled by users into workflows to perform complex scientific experiments. One such experiment is bioclimatic m...

  20. SeaDataNet - Pan-European infrastructure for marine and ocean data management: Unified access to distributed data sets

    Science.gov (United States)

    Schaap, D. M. A.; Maudire, G.

    2009-04-01

    SeaDataNet is an Integrated research Infrastructure Initiative (I3) in EU FP6 (2006 - 2011) to provide the data management system adapted both to the fragmented observation system and the users need for an integrated access to data, meta-data, products and services. Therefore SeaDataNet insures the long term archiving of the large number of multidisciplinary data (i.e. temperature, salinity current, sea level, chemical, physical and biological properties) collected by many different sensors installed on board of research vessels, satellite and the various platforms of the marine observing system. The SeaDataNet project started in 2006, but builds upon earlier data management infrastructure projects, undertaken over a period of 20 years by an expanding network of oceanographic data centres from the countries around all European seas. Its predecessor project Sea-Search had a strict focus on metadata. SeaDataNet maintains significant interest in the further development of the metadata infrastructure, but its primary objective is the provision of easy data access and generic data products. SeaDataNet is a distributed infrastructure that provides transnational access to marine data, meta-data, products and services through 40 interconnected Trans National Data Access Platforms (TAP) from 35 countries around the Black Sea, Mediterranean, North East Atlantic, North Sea, Baltic and Arctic regions. These include: National Oceanographic Data Centres (NODC's) Satellite Data Centres. Furthermore the SeaDataNet consortium comprises a number of expert modelling centres, SME's experts in IT, and 3 international bodies (ICES, IOC and JRC). Planning: The SeaDataNet project is delivering and operating the infrastructure in 3 versions: Version 0: maintenance and further development of the metadata systems developed by the Sea-Search project plus the development of a new metadata system for indexing and accessing to individual data objects managed by the SeaDataNet data centres. This

  1. OGIS Access System

    Data.gov (United States)

    National Archives and Records Administration — The OGIS Access System (OAS) provides case management, stakeholder collaboration, and public communications activities including a web presence via a web portal.

  2. Distribution of mercury in archived fur from little brown bats across Atlantic Canada.

    Science.gov (United States)

    Little, Megan E; Burgess, Neil M; Broders, Hugh G; Campbell, Linda M

    2015-12-01

    Total mercury (Hg) concentrations were measured in archived fur from adult female little brown bats sampled at maternity roosts across Atlantic Canada. Mercury concentrations varied significantly among regions and roosts. Bats from Nova Scotia and Newfoundland had the highest median Hg concentrations (9.67 μg/g and 9.51 μg/g) among regions, and individuals from Kejimkujik National Park had the highest Hg (median: 28.38 μg/g) among roosts. Over one third of individuals sampled had fur Hg concentrations exceeding thresholds associated with neurochemical responses. Within-roost examinations of stable carbon and nitrogen isotopes in fur showed inconsistent associations with Hg concentrations. Therefore, the hypothesis that within-roost variation in Hg is driven by variation in diet is not supported by this data, and it is recommended that key prey items be included in future mercury bioaccumulation studies for bats. The elevated mercury fur concentrations for bats from southern Nova Scotia remains an anomaly of concern even when placed in the larger context of Atlantic Canada. PMID:26340299

  3. A medical application integrating remote 3D visualization tools to access picture archiving and communication system on mobile devices.

    Science.gov (United States)

    He, Longjun; Ming, Xing; Liu, Qian

    2014-04-01

    With computing capability and display size growing, the mobile device has been used as a tool to help clinicians view patient information and medical images anywhere and anytime. However, for direct interactive 3D visualization, which plays an important role in radiological diagnosis, the mobile device cannot provide a satisfactory quality of experience for radiologists. This paper developed a medical system that can get medical images from the picture archiving and communication system on the mobile device over the wireless network. In the proposed application, the mobile device got patient information and medical images through a proxy server connecting to the PACS server. Meanwhile, the proxy server integrated a range of 3D visualization techniques, including maximum intensity projection, multi-planar reconstruction and direct volume rendering, to providing shape, brightness, depth and location information generated from the original sectional images for radiologists. Furthermore, an algorithm that changes remote render parameters automatically to adapt to the network status was employed to improve the quality of experience. Finally, performance issues regarding the remote 3D visualization of the medical images over the wireless network of the proposed application were also discussed. The results demonstrated that this proposed medical application could provide a smooth interactive experience in the WLAN and 3G networks. PMID:24705800

  4. The NASA ADS Abstract Service and the Distributed Astronomy Digital Library [and] Project Soup: Comparing Evaluations of Digital Collection Efforts [and] Cross-Organizational Access Management: A Digital Library Authentication and Authorization Architecture [and] BibRelEx: Exploring Bibliographic Databases by Visualization of Annotated Content-based Relations [and] Semantics-Sensitive Retrieval for Digital Picture Libraries [and] Encoded Archival Description: An Introduction and Overview.

    Science.gov (United States)

    Kurtz, Michael J.; Eichorn, Guenther; Accomazzi, Alberto; Grant, Carolyn S.; Demleitner, Markus; Murray, Stephen S.; Jones, Michael L. W.; Gay, Geri K.; Rieger, Robert H.; Millman, David; Bruggemann-Klein, Anne; Klein, Rolf; Landgraf, Britta; Wang, James Ze; Li, Jia; Chan, Desmond; Wiederhold, Gio; Pitti, Daniel V.

    1999-01-01

    Includes six articles that discuss a digital library for astronomy; comparing evaluations of digital collection efforts; cross-organizational access management of Web-based resources; searching scientific bibliographic databases based on content-based relations between documents; semantics-sensitive retrieval for digital picture libraries; and…

  5. Supporting the Construction of Workflows for Biodiversity Problem-Solving Accessing Secure, Distributed Resources

    Directory of Open Access Journals (Sweden)

    J.S. Pahwa

    2006-01-01

    Full Text Available In the Biodiversity World (BDW project we have created a flexible and extensible Web Services-based Grid environment for biodiversity researchers to solve problems in biodiversity and analyse biodiversity patterns. In this environment, heterogeneous and globally distributed biodiversity-related resources such as data sets and analytical tools are made available to be accessed and assembled by users into workflows to perform complex scientific experiments. One such experiment is bioclimatic modelling of the geographical distribution of individual species using climate variables in order to explain past and future climate-related changes in species distribution. Data sources and analytical tools required for such analysis of species distribution are widely dispersed, available on heterogeneous platforms, present data in different formats and lack inherent interoperability. The present BDW system brings all these disparate units together so that the user can combine tools with little thought as to their original availability, data formats and interoperability. The new prototype BDW system architecture not only brings together heterogeneous resources but also enables utilisation of computational resources and provides a secure access to BDW resources via a federated security model. We describe features of the new BDW system and its security model which enable user authentication from a workflow application as part of workflow execution.

  6. Seamless Synthetic Aperture Radar Archive for Interferometry Analysis

    OpenAIRE

    S. Baker; C. Baru; Bryson, G; Buechler, B.; Crosby, C.; Fielding, E.; Meertens, C.; Nicoll, J.; Youn, C.

    2014-01-01

    The NASA Advancing Collaborative Connections for Earth System Science (ACCESS) seamless synthetic aperture radar (SAR) archive (SSARA) project is a collaboration between UNAVCO, the Alaska Satellite Facility (ASF), the Jet Propulsion Laboratory (JPL), and OpenTopography at the San Diego Supercomputer Center (SDSC) to design and implement a seamless distributed access system for SAR data and derived interferometric SAR (InSAR) data products. A unified application programming interface...

  7. Fast distributed strategic learning for global optima in queueing access games

    KAUST Repository

    Tembine, Hamidou

    2014-08-24

    In this paper we examine combined fully distributed payoff and strategy learning (CODIPAS) in a queue-aware access game over a graph. The classical strategic learning analysis relies on vanishing or small learning rate and uses stochastic approximation tool to derive steady states and invariant sets of the underlying learning process. Here, the stochastic approximation framework does not apply due to non-vanishing learning rate. We propose a direct proof of convergence of the process. Interestingly, the convergence time to one of the global optima is almost surely finite and we explicitly characterize the convergence time. We show that pursuit-based CODIPAS learning is much faster than the classical learning algorithms in games. We extend the methodology to coalitional learning and proves a very fast formation of coalitions for queue-aware access games where the action space is dynamically changing depending on the location of the user over a graph.

  8. A distributed Synchronous reservation multiple access control protocol for mobile Ad hoc networks

    Institute of Scientific and Technical Information of China (English)

    ZHANG Yanling; SUN Xianpu; LI Jiandong

    2007-01-01

    This study proposes a new multiple access control protocol named distributed synchronous reservation multiple access control protocol.in which the hidden and exposed terminal problems are solved,and the quality of service(QoS)requirements for real-time traffic are guaranteed.The protocol is founded on time division multiplex address and a different type of traffic is assigned to difierent priority,according to which a node should compete for and reserve the free slots in a different method.Moreover,there is a reservation acknowledgement process before data transmit in each reserved slot,so that the intruded terminal problem is solved.The throughput and average packets drop probability of this protocol are analyzed and simulated in a fully connected network.the results of which indicate that this protocol is efficient enough to support the real-time traffic.and it is more suitable to MANETs.

  9. Distributed Joint Source-Channel Coding on a Multiple Access Channel with Side Information

    CERN Document Server

    Rajesh, R

    2008-01-01

    We consider the problem of transmission of several distributed sources over a multiple access channel (MAC) with side information at the sources and the decoder. Source-channel separation does not hold for this channel. Sufficient conditions are provided for transmission of sources with a given distortion. The source and/or the channel could have continuous alphabets (thus Gaussian sources and Gaussian MACs are special cases). Various previous results are obtained as special cases. We also provide several good joint source-channel coding schemes for a discrete/continuous source and discrete/continuous alphabet channel. Channels with feedback and fading are also considered. Keywords: Multiple access channel, side information, lossy joint source-channel coding, channels with feedback, fading channels.

  10. (abstract) Satellite Physical Oceanography Data Available From an EOSDIS Archive

    Science.gov (United States)

    Digby, Susan A.; Collins, Donald J.

    1996-01-01

    The Physical Oceanography Distributed Active Archive Center (PO.DAAC) at the Jet Propulsion Laboratory archives and distributes data as part of the Earth Observing System Data and Information System (EOSDIS). Products available from JPL are largely satellite derived and include sea-surface height, surface-wind speed and vectors, integrated water vapor, atmospheric liquid water, sea-surface temperature, heat flux, and in-situ data as it pertains to satellite data. Much of the data is global and spans fourteen years.There is email access, a WWW site, product catalogs, and FTP capabilities. Data is free of charge.

  11. Community archiving of imaging studies

    Science.gov (United States)

    Fritz, Steven L.; Roys, Steven R.; Munjal, Sunita

    1996-05-01

    The quantity of image data created in a large radiology practice has long been a challenge for available archiving technology. Traditional methods ofarchiving the large quantity of films generated in radiology have relied on warehousing in remote sites, with courier delivery of film files for historical comparisons. A digital community archive, accessible via a wide area network, represents a feasible solution to the problem of archiving digital images from a busy practice. In addition, it affords a physician caring for a patient access to imaging studies performed at a variety ofhealthcare institutions without the need to repeat studies. Security problems include both network security issues in the WAN environment and access control for patient, physician and imaging center. The key obstacle to developing a community archive is currently political. Reluctance to participate in a community archive can be reduced by appropriate design of the access mechanisms.

  12. The use of mapped network drive to enhance the availability and accessibility of patient archive in ge-elscint Xpert workstations

    International Nuclear Information System (INIS)

    Purpose: To enhance the search and retrieval of patients' past record for clinical purpose. Methods: In the past, patient data was stored by MOD (Magnetic Optical Disk - Write Many Read Many). Its capacity is 327 MByte per side (654 MByte Total). In our department, each disk take up around 10 days of study. To search for patients' past record, we need to pick up a particular disk from a pile of MODs. With the advent of high speed network and high capacity hard disk, we have developed a method to put patients' past record on line so that the search was made easier and faster. The GE-Elscint Xpert Workstation is running on OS/2 Warp Connect Version 3 with inherent TCP/IP support. The current application is Apex Xpert Version 5.13. The Central Archive Unit is a 9 Gbyte Hard Disk which limited the on-line capacity of around 6 months. The Workstation was connected to a Windows NT based PC on the network. A folder was created and shared for network access. To make resources sharing possible. We installed OS/2Warp Connect software - IBM Peer for OS/2 on the Xpert Workstation. In addition, the Xpert based system was configured to be able to initiate communication with remote TCP/IP and ApexNet nodes. On the Xpert Workstation, Ne apply drive mapping by assigning a drive letter to the remote share located on the Windows NT based PC. To map a shared folder to a drive letter, specify the drive letter and the share's name on the Net Use command. For example, net use s: //WinNTPC /DataFilesmaps the DataFiles share on the WinNTPC computer to drive S. If any folder in the share's path contains a space, you must put the entire path, including the opening double backslash (//), in quotation marks. Connections to NT resources can also be made through the OS/2 network browser, the Sharing and Connecting Graphic User Interface on the Desktop. An active user ID and password authorizes the user to browse and use shared drives. With this mapped drive, we can copy patient record to it. The

  13. Experimental access to Transition Distribution Amplitudes with the P̄ANDA experiment at FAIR

    OpenAIRE

    Singh, B. P.; Erni, W.; Zhao, J.; Schmitt, L.; Al-Turany, M; Cahit, U.; Capozza, L.; Dbeyssi, A.; Deppe, H.; Dzhygadlo, R.; Ehret, A; Flemming, H.; A. Gerhardt(Gesellschaft für Schwerionenforschung GmbH, Darmstadt Germany); Albrecht, M. (Manuela); Götzen, K.

    2015-01-01

    Baryon-to-meson Transition Distribution Amplitudes (TDAs) encoding valuable new information on hadron structure appear as building blocks in the collinear factorized description for several types of hard exclusive reactions. In this paper, we address the possibility of accessing nucleon-to-pion (pi N) TDAs from (p) over barp -> e(+)e(-)pi(0) reaction with the future PANDA detector at the FAIR facility. At high center-of-mass energy and high invariant mass squared of the lepton pair q(2), t...

  14. The equipment access software for a distributed UNIX-based accelerator control system

    International Nuclear Information System (INIS)

    This paper presents a generic equipment access software package for a distributed control system using computers with UNIX or UNIX-like operating systems. The package consists of three main components, an application Equipment Access Library, Message Handler and Equipment Data Base. An application task, which may run in any computer in the network, sends requests to access equipment through Equipment Library calls. The basic request is in the form Equipment-Action-Data and is routed via a remote procedure call to the computer to which the given equipment is connected. In this computer the request is received by the Message Handler. According to the type of the equipment connection, the Message Handler either passes the request to the specific process software in the same computer or forwards it to a lower level network of equipment controllers using MIL1553B, GPIB, RS232 or BITBUS communication. The answer is then returned to the calling application. Descriptive information required for request routing and processing is stored in the real-time Equipment Data Base. The package has been written to be portable and is currently available on DEC Ultrix, LynxOS, HPUX, XENIX, OS-9 and Apollo domain. ((orig.))

  15. Dutch archaeological data depositing, processing, archiving and accessing at DANS: A repository with ten years of history, setting its sails to the future

    OpenAIRE

    Gilissen, V.

    2014-01-01

    2014 marks the ten-year anniversary of the e-depot for Dutch Archaeology (EDNA) at Data Archiving and Networked Services (DANS); a moment to reflect on a decade of development with satisfaction while building on experiences for on-going and future initiatives. Eleven years ago, there was no coordinated effort to preserve or share digital archaeology in the Netherlands; data was scattered throughout inaccessible formats and archives. When DANS was established as the national data archive for s...

  16. SuperB R and D computing program: HTTP direct access to distributed resources

    International Nuclear Information System (INIS)

    The SuperB asymmetric energy e+e− collider and detector to be built at the newly founded Nicola Cabibbo Lab will provide a uniquely sensitive probe of New Physics in the flavor sector of the Standard Model. Studying minute effects in the heavy quark and heavy lepton sectors requires a data sample of 75 ab−1 and a luminosity target of 1036cm−2s−1. The increasing network performance also in the Wide Area Network environment and the capability to read data remotely with good efficiency are providing new possibilities and opening new scenarios in the data access field. Subjects like data access and data availability in a distributed environment are key points in the definition of the computing model for an HEP experiment like SuperB. R and D efforts in such a field have been brought on during the last year in order to release the Computing Technical Design Report within 2013. WAN direct access to data has been identified as one of the more interesting viable option; robust and reliable protocols as HTTP/WebDAV and xrootd are the subjects of a specific R and D line in a mid-term scenario. In this work we present the R and D results obtained in the study of new data access technologies for typical HEP use cases, focusing on specific protocols such as HTTP and WebDAV in Wide Area Network scenarios. Reports on efficiency, performance and reliability tests performed in a data analysis context have been described. Future R and D plan includes HTTP and xrootd protocols comparison tests, in terms of performance, efficiency, security and features available.

  17. Grid Data Access on Widely Distributed Worker Nodes Using Scalla and SRM

    Energy Technology Data Exchange (ETDEWEB)

    Jakl, Pavel; /Prague, Inst. Phys.; Lauret, Jerome; /Brookhaven; Hanushevsky, Andrew; /SLAC; Shoshani, Arie; /LBL, Berkeley; Sim, Alex; /LBL, Berkeley; Gu, Junmin; /LBL, Berkeley

    2011-11-10

    Facing the reality of storage economics, NP experiments such as RHIC/STAR have been engaged in a shift of the analysis model, and now heavily rely on using cheap disks attached to processing nodes, as such a model is extremely beneficial over expensive centralized storage. Additionally, exploiting storage aggregates with enhanced distributed computing capabilities such as dynamic space allocation (lifetime of spaces), file management on shared storages (lifetime of files, pinning file), storage policies or a uniform access to heterogeneous storage solutions is not an easy task. The Xrootd/Scalla system allows for storage aggregation. We will present an overview of the largest deployment of Scalla (Structured Cluster Architecture for Low Latency Access) in the world spanning over 1000 CPUs co-sharing the 350 TB Storage Elements and the experience on how to make such a model work in the RHIC/STAR standard analysis framework. We will explain the key features and approach on how to make access to mass storage (HPSS) possible in such a large deployment context. Furthermore, we will give an overview of a fully 'gridified' solution using the plug-and-play features of Scalla architecture, replacing standard storage access with grid middleware SRM (Storage Resource Manager) components designed for space management and will compare the solution with the standard Scalla approach in use in STAR for the past 2 years. Integration details, future plans and status of development will be explained in the area of best transfer strategy between multiple-choice data pools and best placement with respect of load balancing and interoperability with other SRM aware tools or implementations.

  18. Global distribution of polymorphisms associated with delayed Plasmodium falciparum parasite clearance following artemisinin treatment: genotyping of archive blood samples.

    Science.gov (United States)

    Murai, Kenji; Culleton, Richard; Hisaoka, Teruhiko; Endo, Hiroyoshi; Mita, Toshihiro

    2015-06-01

    The recent emergence and spread of artemisinin-resistant Plasmodium falciparum isolates is a growing concern for global malaria-control efforts. A recent genome-wide analysis study identified two SNPs at genomic positions MAL10-688956 and MAL13-1718319, which are linked to delayed clearance of parasites following artemisinin combination therapy (ACT). It is expected that continuous artemisinin pressure will affect the distribution of these SNPs. Here, we investigate the worldwide distribution of these SNPs using a large number of archived samples in order to generate baseline data from the period before the emergence of ACT resistance. The presence of SNPs in MAL10-688956 and MAL13-1718319 was assessed by nested PCR RFLP and direct DNA sequencing using 653 global P. falciparum samples obtained before the reported emergence of ACT resistance. SNPs at MAL10-688956 and MAL13-1718319 associated with delayed parasite clearance following ACT administration were observed in 8% and 3% of parasites, respectively, mostly in Cambodia and Thailand. Parasites harbouring both SNPs were found in only eight (1%) isolates, all of which were from Cambodia and Thailand. Linkage disequilibrium was detected between MAL10-688956 and MAL13-1718319, suggesting that this SNP combination may have been selected by ACT drug pressure. Neither of the SNPs associated with delayed parasite clearance were observed in samples from Africa or South America. Baseline information of the geographical difference of MAL10-688956 and MAL13-1718319 SNPs provides a solid basis for assessing whether these SNPs are selected by artemisinin-based combination therapies. PMID:25449286

  19. The theory research of multi-user quantum access network with Measurement Device Independent quantum key distribution

    Science.gov (United States)

    Ji, Yi-Ming; Li, Yun-Xia; Shi, Lei; Meng, Wen; Cui, Shu-Min; Xu, Zhen-Yu

    2015-10-01

    Quantum access network can't guarantee the absolute security of multi-user detector and eavesdropper can get access to key information through time-shift attack and other ways. Measurement-device-independent quantum key distribution is immune from all the detection attacks, and accomplishes the safe sharing of quantum key. In this paper, that Measurement-device-independent quantum key distribution is used in the application of multi-user quantum access to the network is on the research. By adopting time-division multiplexing technology to achieve the sharing of multiuser detector, the system structure is simplified and the security of quantum key sharing is acquired.

  20. AccessCulture

    DEFF Research Database (Denmark)

    Valtysson, Bjarki

    of the European Union, and how its cultural policy responds to the changes that the digital paradigm has brought upon the field. The self-publishing features of various Web 2.0 platforms, along with the interactive and distributional potentials that the Internet offers, have given rise to what is referred to here...... in cultural production and consumption. The first part of this works looks at how these changes respond to the field of cultural policy, as well as suggesting a possible culturepolitical reaction in a model which I refer to as access culture. In terms of theoretical approach, the notion of digital cultural...... of YouTube, MySpace, Facebook and Flickr, along with lesser known platforms such as the animated short film Elephants Dream, the BBC's Creative Archive, various Internet artworks and the Internet Archive. I furthermore introduce the copyright system Creative Commons in order to suggest legal, widely...

  1. AccessCulture

    DEFF Research Database (Denmark)

    Valtysson, Bjarki

    the European Union, and how its cultural policy responds to the changes that the digital paradigm has brought upon the field. The self-publishing features of various Web 2.0 platforms, along with the interactive and distributional potentials that the Internet offers, have given rise to what is...... Flickr indicates changes in cultural production and consumption. The first part of this works looks at how these changes respond to the field of cultural policy, as well as suggesting a possible culturepolitical reaction in a model which I refer to as access culture. In terms of theoretical approach, the...... prosumers, I analyse the well-known examples of YouTube, MySpace, Facebook and Flickr, along with lesser known platforms such as the animated short film Elephants Dream, the BBC's Creative Archive, various Internet artworks and the Internet Archive. I furthermore introduce the copyright system Creative...

  2. Report of the experts group on the taxation of the access to gas transport and distribution network

    International Nuclear Information System (INIS)

    In the framework of a new french gas industry organization (directive of the 22 june 1998), a concerting mission has been realized on prices taxation for the transport and distribution facilities. The following topics have been debated: the integration and competition of the european gas market, the gas market liberalization consistency and the taxation of transport and distribution network access. (A.L.B.)

  3. Integrated Data-Archive and Distributed Hydrological Modelling System for Optimized Dam Operation

    Science.gov (United States)

    Shibuo, Yoshihiro; Jaranilla-Sanchez, Patricia Ann; Koike, Toshio

    2013-04-01

    In 2012, typhoon Bopha, which passed through the southern part of the Philippines, devastated the nation leaving hundreds of death tolls and significant destruction of the country. Indeed the deadly events related to cyclones occur almost every year in the region. Such extremes are expected to increase both in frequency and magnitude around Southeast Asia, during the course of global climate change. Our ability to confront such hazardous events is limited by the best available engineering infrastructure and performance of weather prediction. An example of the countermeasure strategy is, for instance, early release of reservoir water (lowering the dam water level) during the flood season to protect the downstream region of impending flood. However, over release of reservoir water affect the regional economy adversely by losing water resources, which still have value for power generation, agricultural and industrial water use. Furthermore, accurate precipitation forecast itself is conundrum task, due to the chaotic nature of the atmosphere yielding uncertainty in model prediction over time. Under these circumstances we present a novel approach to optimize contradicting objectives of: preventing flood damage via priori dam release; while sustaining sufficient water supply, during the predicted storm events. By evaluating forecast performance of Meso-Scale Model Grid Point Value against observed rainfall, uncertainty in model prediction is probabilistically taken into account, and it is then applied to the next GPV issuance for generating ensemble rainfalls. The ensemble rainfalls drive the coupled land-surface- and distributed-hydrological model to derive the ensemble flood forecast. Together with dam status information taken into account, our integrated system estimates the most desirable priori dam release through the shuffled complex evolution algorithm. The strength of the optimization system is further magnified by the online link to the Data Integration and

  4. Design of a Distributed Personal Information Access Control Scheme for Secure Integrated Payment in NFC

    Directory of Open Access Journals (Sweden)

    Jungho Kang

    2015-06-01

    Full Text Available At the center of core technologies for a future cyber world, such as Internet of Things (IoT or big data, is a context-rich system that offers services by using situational information. The field where context-rich systems were first introduced is near-field communication (NFC-based electronic payments. Near-field Communication (NFC integrated payment services collect the payment information of the credit card and the location information to generate patterns in the user’s consumption or movement through big data technology. Based on such pattern information, tailored services, such as advertisement, are offered to users. However, there is difficulty in controlling access to personal information, as there is a collaborative relationship focused on the trusted service manager (TSM that is close knit to shared personal information. Moreover, in the case of Hadoop, among the many big data analytical technologies, it offers access control functions, but not a way to authorize the processing of personal information, making it impossible to grant authority between service providers to process information. As such, this paper proposes a key generation and distribution method, as well as a secure communication protocol. The analysis has shown that the efficiency was greater for security and performance compared to relation works.

  5. Comparison of Traditional and Open-Access Appointment Scheduling for Exponentially Distributed Service Time.

    Science.gov (United States)

    Yan, Chongjun; Tang, Jiafu; Jiang, Bowen; Fung, Richard Y K

    2015-01-01

    This paper compares the performance measures of traditional appointment scheduling (AS) with those of an open-access appointment scheduling (OA-AS) system with exponentially distributed service time. A queueing model is formulated for the traditional AS system with no-show probability. The OA-AS models assume that all patients who call before the session begins will show up for the appointment on time. Two types of OA-AS systems are considered: with a same-session policy and with a same-or-next-session policy. Numerical results indicate that the superiority of OA-AS systems is not as obvious as those under deterministic scenarios. The same-session system has a threshold of relative waiting cost, after which the traditional system always has higher total costs, and the same-or-next-session system is always preferable, except when the no-show probability or the weight of patients' waiting is low. It is concluded that open-access policies can be viewed as alternative approaches to mitigate the negative effects of no-show patients. PMID:26753439

  6. A novel distributed algorithm for media access control address assignment in wireless sensor networks

    Institute of Scientific and Technical Information of China (English)

    TIAN Ye; SHENG Min; LI Jiandong

    2007-01-01

    This Paper presents a novel distributed media access control(MAC)address assignment algorithm,namely virtual grid spatial reusing(VGSR),for wireless sensor networks,which reduces the size of the MAC address efficiently on the basis of both the spatial reuse of MAC address and the mapping of geographical position.By adjusting the communication range of sensor nodes,VGSR algorithm can minimize the size of MAC address and meanwhile guarantee the connectivity of the sensor network.Theoretical analysis and experimental results show that VGSR algorithm is not only of low energy cost,but also scales well with the network ize,with its performance superior to that of other existing algorithms.

  7. Experimental validation of a distributed algorithm for dynamic spectrum access in local area networks

    DEFF Research Database (Denmark)

    Tonelli, Oscar; Berardinelli, Gilberto; Tavares, Fernando Menezes Leitão;

    2013-01-01

    activities with the Autonomous Component Carrier Selection (ACCS) algorithm, a distributed solution for interference management among small neighboring cells. A preliminary evaluation of the algorithm performance is provided considering its live execution on a software defined radio network testbed. The......Next generation wireless networks aim at a significant improvement of the spectral efficiency in order to meet the dramatic increase in data service demand. In local area scenarios user-deployed base stations are expected to take place, thus making the centralized planning of frequency resources...... among the cells, a non-viable solution. Cognitive Radio (CR) and Dynamic Spectrum Access (DSA) are the research paradigms which are expected to provide the network nodes the capabilities for an autonomous and efficient selection of the spectrum resources. In this paper we present the first experimental...

  8. Sociospatial distribution of access to facilities for moderate and vigorous intensity physical activity in Scotland by different modes of transport

    Directory of Open Access Journals (Sweden)

    Lamb Karen E

    2012-07-01

    Full Text Available Abstract Background People living in neighbourhoods of lower socioeconomic status have been shown to have higher rates of obesity and a lower likelihood of meeting physical activity recommendations than their more affluent counterparts. This study examines the sociospatial distribution of access to facilities for moderate or vigorous intensity physical activity in Scotland and whether such access differs by the mode of transport available and by Urban Rural Classification. Methods A database of all fixed physical activity facilities was obtained from the national agency for sport in Scotland. Facilities were categorised into light, moderate and vigorous intensity activity groupings before being mapped. Transport networks were created to assess the number of each type of facility accessible from the population weighted centroid of each small area in Scotland on foot, by bicycle, by car and by bus. Multilevel modelling was used to investigate the distribution of the number of accessible facilities by small area deprivation within urban, small town and rural areas separately, adjusting for population size and local authority. Results Prior to adjustment for Urban Rural Classification and local authority, the median number of accessible facilities for moderate or vigorous intensity activity increased with increasing deprivation from the most affluent or second most affluent quintile to the most deprived for all modes of transport. However, after adjustment, the modelling results suggest that those in more affluent areas have significantly higher access to moderate and vigorous intensity facilities by car than those living in more deprived areas. Conclusions The sociospatial distributions of access to facilities for both moderate intensity and vigorous intensity physical activity were similar. However, the results suggest that those living in the most affluent neighbourhoods have poorer access to facilities of either type that can be reached on foot

  9. Open Access. Chapter 6 of Scholarly Communication for Librarians.

    OpenAIRE

    Morrison, Heather

    2008-01-01

    In-depth overview of open access, covering definitions (open access publishing, open access archives, gratis and libre, open access works versus open access processes), major statements and declarations, types of open access, major initiatives, trends, advocacy and lobbying.

  10. Optimizing NEURON Simulation Environment Using Remote Memory Access with Recursive Doubling on Distributed Memory Systems.

    Science.gov (United States)

    Shehzad, Danish; Bozkuş, Zeki

    2016-01-01

    Increase in complexity of neuronal network models escalated the efforts to make NEURON simulation environment efficient. The computational neuroscientists divided the equations into subnets amongst multiple processors for achieving better hardware performance. On parallel machines for neuronal networks, interprocessor spikes exchange consumes large section of overall simulation time. In NEURON for communication between processors Message Passing Interface (MPI) is used. MPI_Allgather collective is exercised for spikes exchange after each interval across distributed memory systems. The increase in number of processors though results in achieving concurrency and better performance but it inversely affects MPI_Allgather which increases communication time between processors. This necessitates improving communication methodology to decrease the spikes exchange time over distributed memory systems. This work has improved MPI_Allgather method using Remote Memory Access (RMA) by moving two-sided communication to one-sided communication, and use of recursive doubling mechanism facilitates achieving efficient communication between the processors in precise steps. This approach enhanced communication concurrency and has improved overall runtime making NEURON more efficient for simulation of large neuronal network models. PMID:27413363

  11. Experimental access to Transition Distribution Amplitudes with the \\={P}ANDA experiment at FAIR

    CERN Document Server

    Singh, B P; Keshelashvili, I; Krusche, B; Steinacher, M; Liu, B; Liu, H; Liu, Z; Shen, X; Wang, C; Zhao, J; Albrecht, M; Fink, M; Heinsius, F H; Held, T; Holtmann, T; Koch, H; Kopf, B; Kümmel, M; Kuhl, G; Kuhlmann, M; Leyhe, M; Mikirtychyants, M; Musiol, P; Mustafa, A; Pelizäus, M; Pychy, J; Richter, M; Schnier, C; Schröder, T; Sowa, C; Steinke, M; Triffterer, T; Wiedner, U; Beck, R; Hammann, C; Kaiser, D; Ketzer, B; Kube, M; Mahlberg, P; Rossbach, M; Schmidt, C; Schmitz, R; Thoma, U; Walther, D; Wendel, C; Wilson, A; Bianconi, A; Bragadireanu, M; Caprini, M; Pantea, D; Pietreanu, D; Vasile, M E; Patel, B; Kaplan, D; Brandys, P; Czyzewski, T; Czyzycki, W; Domagala, M; Hawryluk, M; Filo, G; Krawczyk, M; Kwiatkowski, D; Lisowski, E; Lisowski, F; Fiutowski, T; Idzik, M; Mindur, B; Przyborowski, D; Swientek, K; Czech, B; Kliczewski, S; Korcyl, K; Kozela, A; Kulessa, P; Lebiedowicz, P; Malgorzata, K; Pysz, K; Schäfer, W; Siudak, R; Szczurek, A; Biernat, J; Jowzaee, S; Kamys, B; Kistryn, S; Korcyl, G; Krzemien, W; Magiera, A; Moskal, P; Palka, M; Psyzniak, A; Rudy, Z; Salabura, P; Smyrski, J; Strzempek, P; Wrońska, A; Augustin, I; Lehmann, I; Nicmorus, D; Schepers, G; Schmitt, L; Al-Turany, M; Cahit, U; Capozza, L; Dbeyssi, A; Deppe, H; Dzhygadlo, R; Ehret, A; Flemming, H; Gerhardt, A; Götzen, K; Karabowicz, R; Kliemt, R; Kunkel, J; Kurilla, U; Lehmann, D; Lühning, J; Maas, F; Morales, C Morales; Espí, M C Mora; Nerling, F; Orth, H; Peters, K; Piñeiro, D Rodríguez; Saito, N; Saito, T; Lorente, A Sánchez; Schmidt, C J; Schwarz, C; Schwiening, J; Traxler, M; Valente, R; Voss, B; Wieczorek, P; Wilms, A; Zühlsdorf, M; Abazov, V M; Alexeev, G; Arefiev, A; Astakhov, V I; Barabanov, M Yu; Batyunya, B V; Davydov, Yu I; Dodokhov, V Kh; Efremov, A A; Fedunov, A G; Festchenko, A A; Galoyan, A S; Grigoryan, S; Karmokov, A; Koshurnikov, E K; Lobanov, V I; Lobanov, Yu Yu; Makarov, A F; Malinina, L V; Malyshev, V L; Mustafaev, G A; Olshevskiy, A; Pasyuk, M A; Perevalova, E A; Piskun, A A; Pocheptsov, T A; Pontecorvo, G; Rodionov, V K; Rogov, Yu N; Salmin, R A; Samartsev, A G; Sapozhnikov, M G; Shabratova, G S; Skachkov, N B; Skachkova, A N; Strokovsky, E A; Suleimanov, M K; Teshev, R Sh; Tokmenin, V V; Uzhinsky, V V; Vodopyanov, A S; Zaporozhets, S A; Zhuravlev, N I; Zorin, A G; Branford, D; Glazier, D; Watts, D; Woods, P; Britting, A; Eyrich, W; Lehmann, A; Uhlig, F; Dobbs, S; Seth, K; Tomaradze, A; Xiao, T; Bettoni, D; Carassiti, V; Ramusino, A Cotta; Dalpiaz, P; Drago, A; Fioravanti, E; Garzia, I; Savriè, M; Stancari, G; Akishina, V; Kisel, I; Kulakov, I; Zyzak, M; Arora, R; Bel, T; Gromliuk, A; Kalicy, G; Krebs, M; Patsyuk, M; Zuehlsdorf, M; Bianchi, N; Gianotti, P; Guaraldo, C; Lucherini, V; Pace, E; Bersani, A; Bracco, G; Macri, M; Parodi, R F; Bianco, S; Bremer, D; Brinkmann, K T; Diehl, S; Dormenev, V; Drexler, P; Düren, M; Eissner, T; Etzelmüller, E; Föhl, K; Galuska, M; Gessler, T; Gutz, E; Hayrapetyan, A; Hu, J; Kröck, B; Kühn, W; Kuske, T; Lange, S; Liang, Y; Merle, O; Metag, V; Mülhheim, D; Münchow, D; Nanova, M; Novotny, R; Pitka, A; Quagli, T; Rieke, J; Rosenbaum, C; Schnell, R; Spruck, B; Stenzel, H; Thöring, U; Ullrich, T; Wasem, T; Werner, M; Zaunick, H G; Ireland, D; Rosner, G; Seitz, B; Deepak, P N; Kulkarni, A V; Apostolou, A; Babai, M; Kavatsyuk, M; Lemmens, P; Lindemulder, M; Löhner, H; Messchendorp, J; Schakel, P; Smit, H; van der Weele, J C; Veenstra, R; Tiemens, M; Vejdani, S; Kalita, K; Mohanta, D P; Kumar, A; Roy, A; Sahoo, R; Sohlbach, H; Büscher, M; Cao, L; Cebulla, A; Deermann, D; Dosdall, R; Esch, S; Georgadze, I; Gillitzer, A; Goerres, A; Goldenbaum, F; Grunwald, D; Herten, A; Hu, Q; Kemmerling, G; Kleines, H; Kozlov, V; Lehrach, A; Leiber, S; Maier, R; Nellen, R; Ohm, H; Orfanitski, S; Prasuhn, D; Prencipe, E; Ritman, J; Schadmand, S; Schumann, J; Sefzick, T; Serdyuk, V; Sterzenbach, G; Stockmanns, T; Wintz, P; Wüstner, P; Xu, H; Li, S; Li, Z; Sun, Z; Rigato, V; Fissum, S; Hansen, K; Isaksson, L; Lundin, M; Schröder, B; Achenbach, P; Bleser, S; Cardinali, M; Corell, O; Deiseroth, M; Denig, A; Distler, M; Feldbauer, F; Fritsch, M; Jasinski, P; Hoek, M; Kangh, D; Karavdina, A; Lauth, W; Leithoff, H; Merkel, H; Michel, M; Motzko, C; Müller, U; Noll, O; Plueger, S; Pochodzalla, J; Sanchez, S; Schlimme, S; Sfienti, C; Steinen, M; Thiel, M; Weber, T; Zambrana, M; Dormenev, V I; Fedorov, A A; Korzihik, M V; Missevitch, O V; Balanutsa, P; Balanutsa, V; Chernetsky, V; Demekhin, A; Dolgolenko, A; Fedorets, P; Gerasimov, A; Goryachev, V; Varentsov, V; Boukharov, A; Malyshev, O; Marishev, I; Semenov, A; Konorov, I; Paul, S; Grieser, S; Hergemöller, A K; Khoukaz, A; Köhler, E; Täschner, A; Wessels, J; Dash, S; Jadhav, M; Kumar, S; Sarin, P; Varma, R; Chandratre, V B; Datar, V; Dutta, D; Jha, V; Kumawat, H; Mohanty, A K; Roy, B; Yan, Y; Chinorat, K; Khanchai, K; Ayut, L; Pornrad, S; Barnyakov, A Y; Blinov, A E; Blinov, V E; Bobrovnikov, V S; Kononov, S A; Kravchenko, E A; Kuyanov, I A; Onuchin, A P; Sokolov, A A; Tikhonov, Y A; Atomssa, E; Hennino, T; Imre, M; Kunne, R; Galliard, C Le; Ma, B; Marchand, D; Ong, S; Ramstein, B; Rosier, P; Tomasi-Gustafsson, E; Van de Wiele, J; Boca, G; Costanza, S; Genova, P; Lavezzi, L; Montagna, P; Rotondi, A; Abramov, V; Belikov, N; Bukreeva, S; Davidenko, A; Derevschikov, A; Goncharenko, Y; Grishin, V; Kachanov, V; Kormilitsin, V; Melnik, Y; Levin, A; Minaev, N; Mochalov, V; Morozov, D; Nogach, L; Poslavskiy, S; Ryazantsev, A; Ryzhikov, S; Semenov, P; Shein, I; Uzunian, A; Vasiliev, A; Yakutin, A; Yabsley, B; Bäck, T; Cederwall, B; Makónyi, K; Tegnér, P E; von Würtemberg, K M; Belostotski, S; Gavrilov, G; Izotov, A; Kashchuk, A; Levitskaya, O; Manaenkov, S; Miklukho, O; Naryshkin, Y; Suvorov, K; Veretennikov, D; Zhadanov, A; Rai, A K; Godre, S S; Duchat, R; Amoroso, A; Bussa, M P; Busso, L; De Mori, F; Destefanis, M; Fava, L; Ferrero, L; Greco, M; Maggiora, M; Maniscalco, G; Marcello, S; Sosio, S; Spataro, S; Zotti, L; Calvo, D; Coli, S; De Remigis, P; Filippi, A; Giraudo, G; Lusso, S; Mazza, G; Mingnore, M; Rivetti, A; Wheadon, R; Balestra, F; Iazzi, F; Introzzi, R; Lavagno, A; Younis, H; Birsa, R; Bradamante, F; Bressan, A; Martin, A; Clement, H; Gålnander, B; Balkeståhl, L Caldeira; Calén, H; Fransson, K; Johansson, T; Kupsc, A; Marciniewski, P; Pettersson, J; Schönning, K; Wolke, M; Zlomanczuk, J; Díaz, J; Ortiz, A; Vinodkumar, P C; Parmar, A; Chlopik, A; Melnychuk, D; Slowinski, B; Trzcinski, A; Wojciechowski, M; Wronka, S; Zwieglinski, B; Bühler, P; Marton, J; Suzuki, K; Widmann, E; Zmeskal, J; Fröhlich, B; Khaneft, D; Lin, D; Zimmermann, I; Semenov-Tian-Shansky, K

    2014-01-01

    We address the possibility of accessing nucleon-to-pion ($\\pi N$) Transition Distribution Amplitudes (TDAs) from $\\bar{p}p \\to e^+e^- \\pi^0$ reaction with the future \\={P}ANDA detector at the FAIR facility. At high center of mass energy and high invariant mass of the lepton pair $q^2$, the amplitude of the signal channel $\\bar{p}p \\to e^+e^- \\pi^0$ admits a QCD factorized description in terms of $\\pi N$ TDAs and nucleon Distribution Amplitudes (DAs) in the forward and backward kinematic regimes. Assuming the validity of this factorized description, we perform feasibility studies for measuring $\\bar{p}p \\to e^+e^- \\pi^0$ with the \\={P}ANDA detector. Detailed simulations on signal reconstruction efficiency as well as on rejection of the most severe background channel, {\\it i.e.} $\\bar{p}p \\to \\pi^+\\pi^- \\pi^0$ were performed for the center of mass energy squared $s = 5$ GeV$^2$ and $s = 10$ GeV$^2$, in the kinematic regions $3.0 0.5 $ in the proton-antiproton center of mass frame. Results of the simulation sho...

  12. Optimizing NEURON Simulation Environment Using Remote Memory Access with Recursive Doubling on Distributed Memory Systems

    Science.gov (United States)

    Bozkuş, Zeki

    2016-01-01

    Increase in complexity of neuronal network models escalated the efforts to make NEURON simulation environment efficient. The computational neuroscientists divided the equations into subnets amongst multiple processors for achieving better hardware performance. On parallel machines for neuronal networks, interprocessor spikes exchange consumes large section of overall simulation time. In NEURON for communication between processors Message Passing Interface (MPI) is used. MPI_Allgather collective is exercised for spikes exchange after each interval across distributed memory systems. The increase in number of processors though results in achieving concurrency and better performance but it inversely affects MPI_Allgather which increases communication time between processors. This necessitates improving communication methodology to decrease the spikes exchange time over distributed memory systems. This work has improved MPI_Allgather method using Remote Memory Access (RMA) by moving two-sided communication to one-sided communication, and use of recursive doubling mechanism facilitates achieving efficient communication between the processors in precise steps. This approach enhanced communication concurrency and has improved overall runtime making NEURON more efficient for simulation of large neuronal network models. PMID:27413363

  13. Immigration, language proficiency, and autobiographical memories: Lifespan distribution and second-language access.

    Science.gov (United States)

    Esposito, Alena G; Baker-Ward, Lynne

    2016-08-01

    This investigation examined two controversies in the autobiographical literature: how cross-language immigration affects the distribution of autobiographical memories across the lifespan and under what circumstances language-dependent recall is observed. Both Spanish/English bilingual immigrants and English monolingual non-immigrants participated in a cue word study, with the bilingual sample taking part in a within-subject language manipulation. The expected bump in the number of memories from early life was observed for non-immigrants but not immigrants, who reported more memories for events surrounding immigration. Aspects of the methodology addressed possible reasons for past discrepant findings. Language-dependent recall was influenced by second-language proficiency. Results were interpreted as evidence that bilinguals with high second-language proficiency, in contrast to those with lower second-language proficiency, access a single conceptual store through either language. The final multi-level model predicting language-dependent recall, including second-language proficiency, age of immigration, internal language, and cue word language, explained ¾ of the between-person variance and (1)/5 of the within-person variance. We arrive at two conclusions. First, major life transitions influence the distribution of memories. Second, concept representation across multiple languages follows a developmental model. In addition, the results underscore the importance of considering language experience in research involving memory reports. PMID:26274061

  14. Applied Archival Downloading with Wget

    OpenAIRE

    Kellen Kurschinski

    2013-01-01

    Archival websites offer a wealth of resources to historians, but increased accessibility does not always translate into increased utility. In other words, while online collections often allow historians to access hitherto unavailable or cost-prohibitive materials, they can also be limited by the manner in which content is presented and organized. Take for example the Indian Affairs Annual Reports database hosted on the Library and Archives Canada [LAC] website. Say you wanted to download an e...

  15. Experimental access to Transition Distribution Amplitudes with the PANDA experiment at FAIR

    International Nuclear Information System (INIS)

    Baryon-to-meson Transition Distribution Amplitudes (TDAs) encoding valuable new information on hadron structure appear as building blocks in the collinear factorized description for several types of hard exclusive reactions. In this paper, we address the possibility of accessing nucleon-to-pion (πN) TDAs from anti pp → e+e-π0 reaction with the future PANDA detector at the FAIR facility. At high center-of-mass energy and high invariant mass squared of the lepton pair q2, the amplitude of the signal channel anti pp → e+e-π0 admits a QCD factorized description in terms of πN TDAs and nucleon Distribution Amplitudes (DAs) in the forward and backward kinematic regimes. Assuming the validity of this factorized description, we perform feasibility studies for measuring anti pp → e+e-π0 with the PANDA detector. Detailed simulations on signal reconstruction efficiency as well as on rejection of the most severe background channel, i.e. anti pp → π+π-π0 were performed for the center-of-mass energy squared s = 5 GeV2 and s = 10 GeV2, in the kinematic regions 3.0 < q2 < 4.3 GeV2 and 5 < q2 GeV2, respectively, with a neutral pion scattered in the forward or backward cone vertical stroke cos θπ0 vertical stroke > 0.5 in the proton-antiproton center-of-mass frame. Results of the simulation show that the particle identification capabilities of the PANDA detector will allow to achieve a background rejection factor of 5 . 107 (1 . 107) at low (high) q2 for s = 5 GeV2, and of 1 . 108 (6 . 106) at low (high) q2 for s = 10 GeV2, while keeping the signal reconstruction efficiency at around 40%. At both energies, a clean lepton signal can be reconstructed with the expected statistics corresponding to 2 fb-1 of integrated luminosity. The cross sections obtained from the simulations are used to show that a test of QCD collinear factorization can be done at the lowest order by measuring scaling laws and angular distributions. The future measurement of the signal channel

  16. Sea level measured by tide gauges from global oceans -- the Joint Archive for Sea Level holdings as of October 2015 (NODC Accession 0019568)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Joint Archive for Sea Level (JASL), a collaboration between the University of Hawaii Sea Level Center and the National Centers for Environmental Information...

  17. Fermi Science Support Center Data Servers and Archive

    Science.gov (United States)

    Reustle, Alexander; FSSC, LAT Collaboration

    2016-01-01

    The Fermi Science Support Center (FSSC) provides the scientific community with access to Fermi data and other products. The Gamma-Ray Burst Monitor (GBM) data is stored at NASA's High Energy Astrophysics Science Archive Research Center (HEASARC) and is accessible through their searchable Browse web interface. The Large Area Telescope (LAT) data is distributed through a custom FSSC interface where users can request all photons detected from a region on the sky over a specified time and energy range. Through its website the FSSC also provides planning and scheduling products, such as long and short term observing timelines, spacecraft position and attitude histories, and exposure maps. We present an overview of the different data products provided by the FSSC, how they can be accessed, and statistics on the archive usage since launch.

  18. Effectiveness of caching in a distributed digital library system

    DEFF Research Database (Denmark)

    Hollmann, J.; Ardø, Anders; Stenstrom, P.

    2007-01-01

    Today independent publishers are offering digital libraries with fulltext archives. In an attempt to provide a single user-interface to a large set of archives, the studied Article-Database-Service offers a consolidated interface to a geographically distributed set of archives. While this approach...... single article is accessed. But our experiments showed that improvement introduced a lot of overhead. Finally, it is shown that the reason for this cache behavior is the long time distance between re-accesses, which makes caching quite unfeasible....

  19. Sprint methods for web archive research

    NARCIS (Netherlands)

    Huurdeman, H.C.; Ben David, A.; Samar, T.

    2013-01-01

    Web archives provide access to snapshots of the Web of the past, and could be valuable for research purposes. However, access to these archives is often limited, both in terms of data availability, and interfaces to this data. This paper explores new methods to overcome these limitations. It present

  20. Open Core Data: Semantic driven data access and distribution for terrestrial and marine scientific drilling data

    Science.gov (United States)

    Fils, D.; Noren, A. J.; Lehnert, K. A.

    2015-12-01

    Open Core Data (OCD) is a science-driven, innovative, efficient, and scalable infrastructure for data generated by scientific drilling and coring projects across all Earth sciences. It is designed to make make scientific drilling data semantically discoverable, persistent, citable, and approachable to maximize their utility to present and future geoscience researchers. Scientific drilling and coring is crucial for the advancement of the Earth Sciences, unlocking new frontiers in the geologic record. Open Core Data will utilize and link existing data systems, services, and expertise of the JOIDES Resolution Science Operator (JRSO), the Continental Scientific Drilling Coordination Office (CSDCO), the Interdisciplinary Earth Data Alliance (IEDA) data facility, and the Consortium for Ocean Leadership (OL). Open Core Data will leverage efforts currently taking place under the EarthCube GeoLink Building Block and other previous efforts in Linked Open Data around ocean drilling data coordinated by OL. The OCD architecture for data distribution blends Linked Data Platform approaches with web services and schema.org use. OCD will further enable integration and tool development by assigning and using vocabularies, provenance, and unique IDs (DOIs, IGSN, URIs) in scientific drilling resources. A significant focus of this effort is to enable large scale automated access to the data by domain specific communities such as MagIC and Neotoma. Providing them a process to integrate the facility data into their data models, workflows and tools. This aspect will encompass methods to maintain awareness of authority information enabling users to trace data back to the originating facility. Initial work on OCD is taking place under a supplemental awarded to IEDA. This talk gives an overview of that work to date and planned future directions for the distribution of scientific drilling data by this effort.

  1. Joint Distributed Access Point Selection and Power Allocation in Cognitive Radio Networks

    CERN Document Server

    Hong, Mingyi; Alviar, Jorge

    2011-01-01

    Spectrum management has been identified as a crucial step towards enabling the technology of the cognitive radio network (CRN). Most of the current works dealing with spectrum management in the CRN focus on a single task of the problem, e.g., spectrum sensing, spectrum decision, spectrum sharing or spectrum mobility. In this work, we argue that for certain network configurations, jointly performing several tasks of the spectrum management improves the spectrum efficiency. Specifically, we study the uplink resource management problem in a CRN where there exist multiple cognitive users (CUs) and access points (APs), with each AP operates on a set of non-overlapping channels. The CUs, in order to maximize their uplink transmission rates, have to associate to a suitable AP (spectrum decision), and to share the channels belong to this AP with other CUs (spectrum sharing). These tasks are clearly interdependent, and the problem of how they should be carried out efficiently and distributedly is still open in the lit...

  2. Entanglement distribution over quantum code-division multiple-access networks

    Science.gov (United States)

    Zhu, Chang-long; Yang, Nan; Liu, Yu-xi; Nori, Franco; Zhang, Jing

    2015-10-01

    We present a method for quantum entanglement distribution over a so-called code-division multiple-access network, in which two pairs of users share the same quantum channel to transmit information. The main idea of this method is to use different broadband chaotic phase shifts, generated by electro-optic modulators and chaotic Colpitts circuits, to encode the information-bearing quantum signals coming from different users and then recover the masked quantum signals at the receiver side by imposing opposite chaotic phase shifts. The chaotic phase shifts given to different pairs of users are almost uncorrelated due to the randomness of chaos and thus the quantum signals from different pair of users can be distinguished even when they are sent via the same quantum channel. It is shown that two maximally entangled states can be generated between two pairs of users by our method mediated by bright coherent lights, which can be more easily implemented in experiments compared with single-photon lights. Our method is robust under the channel noises if only the decay rates of the information-bearing fields induced by the channel noises are not quite high. Our study opens up new perspectives for addressing and transmitting quantum information in future quantum networks.

  3. The Earth System Grid Federation : an Open Infrastructure for Access to Distributed Geospatial Data

    Science.gov (United States)

    Cinquini, Luca; Crichton, Daniel; Mattmann, Chris; Harney, John; Shipman, Galen; Wang, Feiyi; Ananthakrishnan, Rachana; Miller, Neill; Denvil, Sebastian; Morgan, Mark; Pobre, Zed; Bell, Gavin M.; Drach, Bob; Williams, Dean; Kershaw, Philip; Pascoe, Stephen; Gonzalez, Estanislao; Fiore, Sandro; Schweitzer, Roland

    2012-01-01

    The Earth System Grid Federation (ESGF) is a multi-agency, international collaboration that aims at developing the software infrastructure needed to facilitate and empower the study of climate change on a global scale. The ESGF's architecture employs a system of geographically distributed peer nodes, which are independently administered yet united by the adoption of common federation protocols and application programming interfaces (APIs). The cornerstones of its interoperability are the peer-to-peer messaging that is continuously exchanged among all nodes in the federation; a shared architecture and API for search and discovery; and a security infrastructure based on industry standards (OpenID, SSL, GSI and SAML). The ESGF software is developed collaboratively across institutional boundaries and made available to the community as open source. It has now been adopted by multiple Earth science projects and allows access to petabytes of geophysical data, including the entire model output used for the next international assessment report on climate change (IPCC-AR5) and a suite of satellite observations (obs4MIPs) and reanalysis data sets (ANA4MIPs).

  4. Gaia archive

    CERN Document Server

    Hypki, Arkadiusz

    2016-01-01

    The Gaia archive is being designed and implemented by the DPAC Consortium. The purpose of the archive is to maximize the scientific exploitation of the Gaia data by the astronomical community. Thus, it is crucial to gather and discuss with the community the features of the Gaia archive as much as possible. It is especially important from the point of view of the GENIUS project to gather the feedback and potential use cases for the archive. This paper presents very briefly the general ideas behind the Gaia archive and presents which tools are already provided to the community.

  5. Experimental access to Transition Distribution Amplitudes with the PANDA experiment at FAIR

    Energy Technology Data Exchange (ETDEWEB)

    Singh, B.P. [Aligarh Muslim Univ. (India). Physics Dept.; Erni, W.; Keshelashvili, I. [Basel Univ. (Switzerland); Collaboration: The PANDA Collaboration; and others

    2015-08-15

    Baryon-to-meson Transition Distribution Amplitudes (TDAs) encoding valuable new information on hadron structure appear as building blocks in the collinear factorized description for several types of hard exclusive reactions. In this paper, we address the possibility of accessing nucleon-to-pion (πN) TDAs from anti pp → e{sup +}e{sup -}π{sup 0} reaction with the future PANDA detector at the FAIR facility. At high center-of-mass energy and high invariant mass squared of the lepton pair q{sup 2}, the amplitude of the signal channel anti pp → e{sup +}e{sup -}π{sup 0} admits a QCD factorized description in terms of πN TDAs and nucleon Distribution Amplitudes (DAs) in the forward and backward kinematic regimes. Assuming the validity of this factorized description, we perform feasibility studies for measuring anti pp → e{sup +}e{sup -}π{sup 0} with the PANDA detector. Detailed simulations on signal reconstruction efficiency as well as on rejection of the most severe background channel, i.e. anti pp → π{sup +}π{sup -}π{sup 0} were performed for the center-of-mass energy squared s = 5 GeV{sup 2} and s = 10 GeV{sup 2}, in the kinematic regions 3.0 < q{sup 2} < 4.3 GeV{sup 2} and 5 < q{sup 2} GeV{sup 2}, respectively, with a neutral pion scattered in the forward or backward cone vertical stroke cos θ{sub π{sup 0}} vertical stroke > 0.5 in the proton-antiproton center-of-mass frame. Results of the simulation show that the particle identification capabilities of the PANDA detector will allow to achieve a background rejection factor of 5 . 10{sup 7} (1 . 10{sup 7}) at low (high) q{sup 2} for s = 5 GeV{sup 2}, and of 1 . 10{sup 8} (6 . 10{sup 6}) at low (high) q{sup 2} for s = 10 GeV{sup 2}, while keeping the signal reconstruction efficiency at around 40%. At both energies, a clean lepton signal can be reconstructed with the expected statistics corresponding to 2 fb{sup -1} of integrated luminosity. The cross sections obtained from the simulations are used to

  6. BioExtract Server - An integrated workflow-enabling system to access and analyze heterogeneous, distributed biomolecular data

    Science.gov (United States)

    Many computational workflows in bioinformatics require access to multiple, distributed data sources and analytic tools. The requisite data sources may include large public data repositories, community databases, and project databases for use in domain-specific research. Because different data source...

  7. Archiving Websites

    DEFF Research Database (Denmark)

    Brügger, Niels

    This book treats the micro archiving of websites, i.e. archiving by researchers, students or others without special technical knowledge who, using a standard computer, wish to save a website for further study. The phenomenon is discussed from the standpoint that Internet research must be able...... is reached. Firstly, unlike other well-known media, the Internet does not simply exist in a form suited to being archived, but rather is first formed as an object of study in the archiving, and it is formed differently depending on who does the archiving, when, and for what purpose. Secondly, this means...... that there is an element of subjective creation in the archived material, so that methodical deliberations are necessary — in other words, the answers to why and how the archived material has been created. These conclusions form the starting point for the last section of the book, which, based on comprehensive tests...

  8. Archived film analysis and restoration

    OpenAIRE

    Rares, A.

    2004-01-01

    The progressive degradation of current film archives poses a serious threat to the preservation of our cultural and technical heritage. Digitization and digital restoration are currently the most viable solutions for the long term preservation and high quality restoration of filmed material. They also open the path for more effective search, reuse and distribution of the archived content. This thesis covers various aspects of digital restoration applied to archived film. The main focus here l...

  9. Archiving Space Geodesy Data for 20+ Years at the CDDIS

    Science.gov (United States)

    Noll, Carey E.; Dube, M. P.

    2004-01-01

    Since 1982, the Crustal Dynamics Data Information System (CDDIS) has supported the archive and distribution of geodetic data products acquired by NASA programs. These data include GPS (Global Positioning System), GLONASS (GLObal NAvigation Satellite System), SLR (Satellite Laser Ranging), VLBI (Very Long Baseline Interferometry), and DORIS (Doppler Orbitography and Radiolocation Integrated by Satellite). The data archive supports NASA's space geodesy activities through the Solid Earth and Natural Hazards (SENH) program. The CDDIS data system and its archive have become increasingly important to many national and international programs, particularly several of the operational services within the International Association of Geodesy (IAG), including the International GPS Service (IGS), the International Laser Ranging Service (ILRS), the International VLBI Service for Geodesy and Astrometry (IVS), the International DORIS Service (IDS), and the International Earth Rotation Service (IERS). The CDDIS provides easy and ready access to a variety of data sets, products, and information about these data. The specialized nature of the CDDIS lends itself well to enhancement and thus can accommodate diverse data sets and user requirements. All data sets and metadata extracted from these data sets are accessible to scientists through ftp and the web; general information about each data set is accessible via the web. The CDDIS, including background information about the system and its user communities, the computer architecture, archive contents, available metadata, and future plans will be discussed.

  10. Converged wireline and wireless signal distribution in optical fiber access networks

    DEFF Research Database (Denmark)

    Prince, Kamau

    This thesis presents results obtained during the course of my doctoral studies into the transport of fixed and wireless signaling over a converged otpical access infrastructure. In the formulation, development and assessment of a converged paradigma for multiple-services delivery via optical access...

  11. UK Open Access Policy Landscape

    OpenAIRE

    Picarra, Mafalda

    2014-01-01

    Two distinct paths for open access are being promoted in UK open access policies: open access publishing (gold open access) by RCUK (Gold OA) and self-archiving (green open access) by HEFCE. This requires continuous and coordinated efforts to support universities, academic libraries and researchers in achieving compliance.

  12. TORII: Access to Digital Research Community

    OpenAIRE

    Asnicar, Fabio

    2002-01-01

    The communication of the results of scientific research, and in many ways, research itself have changed in recent years as digital means of information production, distribution and access have become widespread. Paper preprints have been replaced by electronic archives, mail and phone calls by e-mail, typewriters and hand drawing by text and graphics software programs, cabinet files by saved directories on hard disks. These new tools, together with multimedia presentations and conference webs...

  13. Open Access Publishing

    OpenAIRE

    Morrison, Heather

    2007-01-01

    An overview of open access publishing, for college faculty. Presents a definition of open access, the two roads to open access (OA publishing and self-archiving), overview of business models for open access, and examples of open access journals, with a focus on journals developed in British Columbia, including one (Topics in Scholarly Communication) developed by graduate students as a class assignment, and another developed by high school students (The Pink Voice). Includes a handout of res...

  14. Open Access Policy Update

    OpenAIRE

    Morrison, Heather

    2007-01-01

    This presentation explores the status of open access policy developments internationally, and particularly in Canada, as of April 2007. While open access resources are substantial, and growing rapidly, the primary issue for open access archives (institutional repositories) is content acquisition, and few researchers fully understand open access, illustrating an ongoing need for policy. Open access policy initiatives are happening around the world. Sherpa Juliet lists more than 20 funding a...

  15. Central versus institutional self-archiving

    OpenAIRE

    Harnad, Stevan

    2006-01-01

    NIH's, PLoS's, the Wellcome Trust's and now the UK MRC's unreflective support for PubMed Central (PMC), a Central Repository (CR), as the locus for direct self-archiving by authors is very unfortunate for Institutional Repositories (IRs), for self-archiving, and for Open Access (OA) progress in general. Alma Swan has published key papers on both OA self-archiving policy and institutional versus central self-archiving (IRs vs. CRs) analysing the reasons. (a) Institutional self-archiving and ce...

  16. In through the Archive

    DEFF Research Database (Denmark)

    Breinbjerg, Morten; Fritsch, Jonas; Bertelsen, Olav W.

    In this paper we will present a project in which we have orchestrated a collective listening process framed around the notion of the echo - and the interactive listening machine Ekkomaten – to build a participatory sound archive that reflects people’s perceptions and imaginations of a local...... community in the city of Aarhus Denmark. The archive is seen as indicative to the rhythm and nature of the place revealing not only aspects of the lives that unfold, but also how people sense and interpret the local community through their auditory sensibility. During the project we have asked people of all...... in the area for many years. The sound material has been organized in an archive, whichis handled by custom build software (API), and accessible through a physical, designfictional machine called Ekkomaten. In the paper, we would like to discuss the project in relation to the following subjects: 1) Methodology...

  17. Archival Descriptions from the National Archives Catalog

    Data.gov (United States)

    National Archives and Records Administration — Archival Descriptions from the National Archives Catalog data set provides archival descriptions of the permanent holdings of the federal government in the custody...

  18. Accessing proton generalized parton distributions and pion distribution amplitudes with exclusive pion-induced Drell-Yan process at J-PARC

    CERN Document Server

    Sawada, Takahiro; Kumano, Shunzo; Peng, Jen-Chieh; Sawada, Shinya; Tanaka, Kazuhiro

    2016-01-01

    Generalized parton distributions (GPDs) encoding multi-dimensional information of hadron partonic structure appear as the building blocks in a factorized description of hard exclusive reactions. The nucleon GPDs have been accessed by deeply virtual Compton scattering and deeply virtual meson production with lepton beam. A complementary probe with hadron beam is the exclusive pion-induced Drell-Yan process. In this paper, we discuss recent theoretical advances on describing this process in terms of nucleon GPDs and pion distribution amplitudes. Furthermore, we address the feasibility of measuring the exclusive pion-induced Drell-Yan process $\\pi^- p \\to \\mu^+\\mu^- n$ via a spectrometer at the High Momentum Beamline being constructed at J-PARC in Japan. Realization of such measurement at J-PARC will provide a new test of perturbative QCD descriptions of a novel class of hard exclusive reactions. It will also offer the possibility of experimentally accessing nucleon GPDs at large timelike virtuality.

  19. A Distributed Architecture for Sharing Ecological Data Sets with Access and Usage Control Guarantees

    DEFF Research Database (Denmark)

    Bonnet, Philippe; Gonzalez, Javier; Granados, Joel Andres

    2014-01-01

    new insights, there are signicant barriers to the realization of this vision. One of the key challenge is to allow scientists to share their data widely while retaining some form of control over who accesses this data (access control) and more importantly how it is used (usage control). Access...... and usage control is necessary to enforce existing open data policies. We have proposed the vision of trusted cells: A decentralized infrastructure, based on secure hardware running on devices equipped with trusted execution environments at the edges of the Internet. We originally described the utilization...... data sets with access and usage control guarantees. We rely on examples from terrestrial research and monitoring in the arctic in the context of the INTERACT project....

  20. POPcorn: An Online Resource Providing Access to Distributed and Diverse Maize Project Data

    OpenAIRE

    Cannon, Ethalinda K. S.; Birkett, Scott M.; Braun, Bremen L.; Kodavali, Sateesh; Jennewein, Douglas M.; Yilmaz, Alper; Antonescu, Valentin; Antonescu, Corina; Harper, Lisa C.; Gardiner, Jack M.; Schaeffer, Mary L.; Campbell, Darwin A.; Andorf, Carson M.; Andorf, Destri; Lisch, Damon

    2011-01-01

    The purpose of the online resource presented here, POPcorn (Project Portal for corn), is to enhance accessibility of maize genetic and genomic resources for plant biologists. Currently, many online locations are difficult to find, some are best searched independently, and individual project websites often degrade over time—sometimes disappearing entirely. The POPcorn site makes available (1) a centralized, web-accessible resource to search and browse descriptions of ongoing maize genomics pro...

  1. Distributed Rate Allocation Policies for Multi-Homed Video Streaming over Heterogeneous Access Networks

    OpenAIRE

    Zhu, Xiaoqing; Agrawal, Piyush; Singh, Jatinder Pal; Alpcan, Tansu; Girod, Bernd

    2010-01-01

    We consider the problem of rate allocation among multiple simultaneous video streams sharing multiple heterogeneous access networks. We develop and evaluate an analytical framework for optimal rate allocation based on observed available bit rate (ABR) and round-trip time (RTT) over each access network and video distortion-rate (DR) characteristics. The rate allocation is formulated as a convex optimization problem that minimizes the total expected distortion of all video streams. We present a...

  2. ACCESS TO PUBLIC OPEN SPACE: IS DISTRIBUTION EQUITABLE ACROSS DIFFERENT SOCIO-ECONOMIC AREAS

    Directory of Open Access Journals (Sweden)

    Mohammad Javad Koohsari

    2011-12-01

    Full Text Available During the past decade, the role of the built environment on physical activity has been well investigated by public health, transportation and urban design scholars and it has been shown that different aspects of the built environment can influence physical activity Public open spaces (POS like parks have many health benefits and they can be important settings and destinations for having physical activity. Inequality in access to POS which may influence the amount of physical activity can be a reason for lower physical activity among deprived neighbourhoods. This paper aims to examine whether objective access to public open spaces (POS like parks is equally across the different socio-economic status (SES areas in the City of Melbourne. Objective access to POS was measured in network distance using geographic information systems (GIS and area SES was obtained using the SEIFA (Socio-Economic Indexes for Areas index. The results showed there was a significant difference in access to POS according to the SES areas. There was a significant negative correlation between the access to POS and the SES areas in which lower SES areas had poorer access to POS in comparison with the higher ones.

  3. The Long Term Fate of Our Digital Belongings: Toward a Service Model for Personal Archives

    CERN Document Server

    Marshall, Catherine C; Brun-Cottan, Francoise

    2007-01-01

    We conducted a preliminary field study to understand the current state of personal digital archiving in practice. Our aim is to design a service for the long-term storage, preservation, and access of digital belongings by examining how personal archiving needs intersect with existing and emerging archiving technologies, best practices, and policies. Our findings not only confirmed that experienced home computer users are creating, receiving, and finding an increasing number of digital belongings, but also that they have already lost irreplaceable digital artifacts such as photos, creative efforts, and records. Although participants reported strategies such as backup and file replication for digital safekeeping, they were seldom able to implement them consistently. Four central archiving themes emerged from the data: (1) people find it difficult to evaluate the worth of accumulated materials; (2) personal storage is highly distributed both on- and offline; (3) people are experiencing magnified curatorial probl...

  4. Internet access to the web resources of a geographically distributed system of near-and deep-space monitoring

    Science.gov (United States)

    Chernenkov, V. N.; Vitkovskij, V. V.; Kalinina, N. A.

    2007-12-01

    The state and speed characteristics of Web access to the first five nodes of the projected geographically distributed system of scientific monitoring of near and deep space are analyzed. The possibility of developing an architecture involving user query redirection to a caching server is studied. This will make it possible to relieve hardware communication links substantially and speed up HTTP connection time, especially for nodes linked via heavily congested Internet links.

  5. Newspaper archives : a knowledge asset

    OpenAIRE

    Pujari, Anita; Pai, Priya

    2005-01-01

    This paper deals with Newspaper Content as a source of knowledge and how Times Archives of the Times Group has converted the 166-year span of socio-political content of “The Times of India” and the 43 year economic and business barometer “The Economic Times” into an easily accessible Archive. The value of this Archive as a Knowledge Asset lies in its potential of being recalled, researched, reused and re-expressed by the various ventures of the Group. This paper describes the process of Micro...

  6. Assessment of LTE Wireless Access for Monitoring of Energy Distribution in the Smart Grid

    DEFF Research Database (Denmark)

    Madueño, Germán Corrales; Nielsen, Jimmy Jessen; Min Kim, Dong;

    2016-01-01

    amount of traffic that can be served in a cell is not constrained by the data capacity, but rather by the signaling constraints in the PRACH, PDCCH, and PUSCH channels. In this paper we explore these limitations using a detailed simulation of the LTE access reservation protocol (ARP). We find that 1......) assigning RAOs more frequently sometimes worsens performance; and 2) the additional signaling that follows the ARP has very large impact on the capacity in terms of the number of supported devices; we observed a reduction in the capacity by almost a factor of 3. This suggests that a lightweight access...

  7. Distributing Digital Imaging and Communications in Medicine data and optimizing access over satellite networks

    OpenAIRE

    Ernst, Randy D.; Kawashima, Akira; Shepherd, William(Santa Cruz Institute for Particle Physics and Department of Physics, Santa Cruz, CA, 95064, U.S.A); Tamm, Eric P.; Sandler, Carl M.

    1999-01-01

    To improve radiology access to full uncompressed Digital Imaging and Communications in Medicine (DICOM) data sets, we evaluated satellite access to a DICOM server. Radiologists′ home computers were connected by satellite to a medweb DICOM server (Medweb, San Francisco, CA). A 10.2-kb data set containing a 19-image head computed tomography (CT) scan was transferred using DirecPC (Hughes Electronics Corp, Arlington, VA) at three different times of the day; 6 AM, 3 PM, and 8 PM. The average tran...

  8. Torii, an Open Portal over Open Archives

    CERN Document Server

    Bertocco, S

    2001-01-01

    The world of academic publishing is undergoing many changes. Everywhere paper-based publishing is being replaced by electronic archives and ink printing by bits. Unrestricted (web) access to many resources is becoming a fundamental feature of the academic research environment. Particularly in the high-energy physics community, the pre-print distribution has moved completely away from the paper-based system into a fully electronic system based on open archives. At the same time, freely accessible peer-reviewed journals have started to challenge the more traditional, and paper-based journals showing that the entire paper-based cycle can be effectively replaced by a web-based one. The TIPS project was born in this environment and from these observations. It is based on the idea that further progress in information distribution and scientific publishing on the web requires some key ingredients: the implementation of a more extensive semantic structure in the documents that are exchanged; a unified, desktop-like, ...

  9. Equity in Distribution of Health Care Resources; Assessment of Need and Access, Using Three Practical Indicators

    OpenAIRE

    Habib Omrani-Khoo; Farhad Lotfi; Hossein Safari; Sanaz Zargar Balaye Jame; Javad Moghri; Milad Shafii

    2013-01-01

    Abstract Background Equitable distribution of health system resources has been a serious challenge for long ago among the health policy makers. Conducted studies have mostly ever had emphasis on equality rather than equity. In this paper we have attempted to examine both equality and equity in resources distribution. Method This is an applied and descriptive study in which we plotted Lorenz and concentration curves to describe graphically the distribution of hemodialysis beds and nephrologist...

  10. Digital Scholarship and Open Access

    Science.gov (United States)

    Losoff, Barbara; Pence, Harry E.

    2010-01-01

    Open access publications provide scholars with unrestricted access to the "conversation" that is the basis for the advancement of knowledge. The large number of open access journals, archives, and depositories already in existence demonstrates the technical and economic viability of providing unrestricted access to the literature that is the…

  11. Development of a secure and cost-effective infrastructure for the access of arbitrary web-based image distribution systems

    International Nuclear Information System (INIS)

    Purpose: To build an infrastructure that enables radiologists on-call and external users a teleradiological access to the HTML-based image distribution system inside the hospital via internet. In addition, no investment costs should arise on the user side and the image data should be sent renamed using cryptographic techniques. Materials and Methods: A pure HTML-based system manages the image distribution inside the hospital, with an open source project extending this system through a secure gateway outside the firewall of the hospital. The gateway handles the communication between the external users and the HTML server within the network of the hospital. A second firewall is installed between the gateway and the external users and builds up a virtual private network (VPN). A connection between the gateway and the external user is only acknowledged if the computers involved authenticate each other via certificates and the external users authenticate via a multi-stage password system. All data are transferred encrypted. External users get only access to images that have been renamed to a pseudonym by means of automated processing before. Results: With an ADSL internet access, external users achieve an image load frequency of 0.4 CT images per second. More than 90% of the delay during image transfer results from security checks within the firewalls. Data passing the gateway induce no measurable delay. (orig.)

  12. MULTI-AGENT CO-ORDINATION IN DISTRIBUTED E-LEARNING ENVIRONMENTS: PROVIDING ACCESS PERMISSIONS

    Directory of Open Access Journals (Sweden)

    Shantha Visalakshi. U

    2013-04-01

    Full Text Available E-Learning, the new technology of supporting education and training, in recent times has been gaining a lot of attention. Content retrieval in e-learning refers the way by which the learning content is provided by means of electronic medium. It is an effective web-based learning paradigm, where many agents can be assigned with unique responsibilities to cope-up with the content retrieval by various users. Agent based system can manage the information stored in the e-learning environment, accessing and granting access permissions. Each task can be carried out by an autonomous agent and various such agents are grouped to form a multi-agent based system. Existing architectures do not consider the enhanced security measures, where it holds security as one among the agents. In the proposed architecture, security is enhanced at the network level and it wraps up all the other agents providing an enhanced security.

  13. One4All Cooperative Media Access Strategy in Infrastructure Based Distributed Wireless Networks

    DEFF Research Database (Denmark)

    Zhang, Qi; Fitzek, Frank H.P.; Iversen, Villy Bæk

    2008-01-01

    energy consumption. Based on an analytical model, the proposed strategy is compared with the two existing strategies RTS/CTS (request to send/ clear to send) and packet aggregation. The results show that the proposed cooperative scheme has similar throughput performance as packet aggregation and it has...... much higher throughput than the conventional RTS/CTS scheme. Furthermore, the newly introduced cooperative scheme outperforms packet aggregation in terms of channel access delay and energy consumption....

  14. ACCESS TO PUBLIC OPEN SPACE: IS DISTRIBUTION EQUITABLE ACROSS DIFFERENT SOCIO-ECONOMIC AREAS

    OpenAIRE

    Mohammad Javad Koohsari

    2011-01-01

    During the past decade, the role of the built environment on physical activity has been well investigated by public health, transportation and urban design scholars and it has been shown that different aspects of the built environment can influence physical activity Public open spaces (POS) like parks have many health benefits and they can be important settings and destinations for having physical activity. Inequality in access to POS which may influence the amount of physical activity can be...

  15. 22 CFR 171.6 - Archival records.

    Science.gov (United States)

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Archival records. 171.6 Section 171.6 Foreign Relations DEPARTMENT OF STATE ACCESS TO INFORMATION AVAILABILITY OF INFORMATION AND RECORDS TO THE PUBLIC General Policy and Procedures § 171.6 Archival records. The Department ordinarily transfers records to...

  16. Online archives of Science

    CERN Multimedia

    GS Department

    2009-01-01

    CERN Library has enabled a trial access to the online archives of Science, starting in 1880, until 26 June. You are welcome to test this resource at http://www.sciencemag.org/archive/ Please contact Anne.Gentil-Beccot@cern.ch, for any feedback.

  17. ACCESS CONTROL IN DISTRIBUTED SYSTEMS%分布式环境下的访问控制

    Institute of Scientific and Technical Information of China (English)

    刘琼波; 施军; 尤晋元

    2001-01-01

    The security requirements of distributed systems are changing. In this paper an approach to represent the access control policies and evaluate the access requests is proposed. Extended logic programs without functions are introduced to represent the diverse access control policies, and the propagation depth and direction of privileges along the entity hierarchy can be constrained. After privilege conflicts are resolved according to the rules based on priority between different grantors and entities, semantics as answer sets of extended logic programs is attained. Based on certainty and possibility reasoning, an algorithm to determine whether an access request is authorized is proposed. The three issues of distributed authorization, private privileges and conflict resolution are resolved.%为适应分布式环境下的安全需求,提出了一种描述访问控制策略和判定访问请求的方法.采用类似于无函数的扩展逻辑程序的表示方法对安全访问策略进行描述,限定权限传播的深度,利用不同的优先次序定义了多种消解冲突的规则,并给出了类似扩展逻辑程序的回答集语义解释.结合确定性推理和可能性推理,描述了如何判定访问请求的算法.解决了3个问题:分布式授权、私有权限和冲突消解方法.

  18. Digital Archival Image Collections: Who Are the Users?

    Science.gov (United States)

    Herold, Irene M. H.

    2010-01-01

    Archival digital image collections are a relatively new phenomenon in college library archives. Digitizing archival image collections may make them accessible to users worldwide. There has been no study to explore whether collections on the Internet lead to users who are beyond the institution or a comparison of users to a national or…

  19. Open archive solutions to traditional archive/library cooperation

    Directory of Open Access Journals (Sweden)

    Donatella Castelli

    2003-09-01

    Full Text Available The diffusion of Internet is changing the role of archives and libraries and it is opening a wide range of new possibilities. The new vision is that in few years it will be possible to cross-access multiple libraries, archives, museums, and data repositories. The implementation of this revolutionary vision requires the solution of a number of technical, organizational, sociological, and economical issues. Recently, the proposal of a new, low cost technical solution for open repositories of pre-print material, the Open Archives Initiative Protocol for Metadata Harvesting ( OAI-PMH, has greatly stimulated the discussion about these issues in many application frameworks. This paper overviews the status of this discussion in the library and conventional archives frameworks.

  20. Open Access in the Sciences

    OpenAIRE

    Morrison, Heather

    2009-01-01

    Open Access in the Sciences is an overview presentation designed for a library science class at McGill University, with a focus on open access in the Canadian context. There are more than 3,900 fully open access journals listed in the Directory of Open Access Journals; more than a hundred are published in Canada. Selected examples of open access journals from across the country are presented, published by universities / libraries, societies, and government. Open access archives (disciplina...

  1. Assessment of LTE Wireless Access for Monitoring of Energy Distribution in the Smart Grid

    OpenAIRE

    Madueño, Germán Corrales; Nielsen, Jimmy Jessen; Min Kim, Dong; Pratas, Nuno; Stefanovic, Cedomir; Popovski, Petar

    2016-01-01

    While LTE is becoming widely rolled out for human-type services, it is also a promising solution for cost-efficient connectivity of the smart grid monitoring equipment. This is a type of machine-to-machine (M2M) traffic that consists mainly of sporadic uplink transmissions. In such a setting, the amount of traffic that can be served in a cell is not constrained by the data capacity, but rather by the signaling constraints in the random access channel and control channel. In this paper we expl...

  2. WiFi hot spot superdistribution : a profit scheme for WiFi access distribution

    OpenAIRE

    Fritsch, Lothar

    2005-01-01

    The wide-area deployment of WiFi hot spots challenges IP access providers. While new profit models are sought after by them, profitability as well as logistics for large-scale deployment of 802.11 wireless technology are still to be proven. Expenditure for hardware, locations, maintenance, connectivity, marketing, billing and customer care must be considered. Even for large carriers with infrastructure, the deployment of a large-scale WiFi infrastructure may be risky. This paper proposes a mu...

  3. Handling and archiving of magnetic fusion data at DIII-D

    International Nuclear Information System (INIS)

    Recent modifications to the computer network at DIII-D enhance the collection and distribution of newly acquired and archived experimental data. Linked clients and servers route new data from diagnostic computers to centralized mass storage and distribute data on demand to local and remote workstations and computers. Capacity for data handling exceeds the upper limit of DIII-D Tokamak data production of about 4 GBytes per day. Network users have fast access to new data stored on line. An interactive program handles requests for restoration of data archived off line. Disk management procedures retain selected data on line in preference to other data. Redundancy of all components on the archiving path from the network to magnetic media has prevented loss of data. Older data are rearchived as dictated by limited media life

  4. Preserving Long-Term Access to United States Government Documents in Legacy Digital Formats

    Science.gov (United States)

    Woods, Kam A.

    2010-01-01

    Over the past several decades, millions of digital objects of significant scientific, economic, cultural, and historic value have been published and distributed to libraries and archives on removable media. Providing long-term access to these documents, media files, and software executables is an increasingly complex task because of dependencies…

  5. NODC Standard Product: NODC Taxonomic Code on CD-ROM (NODC Accession 0050418)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The content of the NODC Taxonomic Code, Version 8 CD-ROM (CD-ROM NODC-68) distributed by NODC is archived in this accession. Version 7 of the NODC Taxonomic Code...

  6. System architecture and information model for integrated access to distributed biomedical information

    Science.gov (United States)

    Kim, Dongkyu; Alaoui, Adil; Levine, Betty; Leondaridis, Leonidas; Shields, Peter; Byers, Steve; Cleary, Kevin

    2009-02-01

    The current trend towards systems medicine will rely heavily on computational and bioinformatics capabilities to collect, integrate, and analyze massive amounts of data from disparate sources. The objective is to use this information to make medical decisions that improve patient care. At Georgetown University Medical Center, we are developing an informatics capability to integrate several research and clinical databases. Our long term goal is to provide researchers at Georgetown's Lombardi Comprehensive Cancer Center better access to aggregated molecular and clinical information facilitating the investigation of new hypotheses that impact patient care. We also recognize the need for data mining tools and intelligent agents to help researchers in these efforts. This paper describes our initial work to create a flexible platform for researchers and physicians that provides access to information sources including clinical records, medical images, genomic, epigenomic, proteomic and metabolomic data. This paper describes the data sources selected for this pilot project and possible approaches to integrating these databases. We present the different database integration models that we considered. We conclude by outlining the proposed Information Model for the project.

  7. Distributed Multi-Sensor Real-Time Building Environmental Parameters Monitoring System with Remote Data Access

    Directory of Open Access Journals (Sweden)

    Beinarts Ivars

    2014-12-01

    Full Text Available In this paper the advanced monitoring system of multiple environmental parameters is presented. The purpose of the system is a long-term estimation of energy efficiency and sustainability for the research test stands which are made of different building materials. Construction of test stands, and placement of main sensors are presented in the first chapter. The structure of data acquisition system includes a real-time interface with sensors and a data logger that allows to acquire and log data from all sensors with fixed rate. The data logging system provides a remote access to the processing of the acquired data and carries out periodical saving at a remote FTP server using an Internet connection. The system architecture and the usage of sensors are explained in the second chapter. In the third chapter implementation of the system, different interfaces of sensors and energy measuring devices are discussed and several examples of data logger program are presented. Each data logger is reading data from analog and digital channels. Measurements can be displayed directly on a screen using WEB access or using data from FTP server. Measurements and acquired data graphical results are presented in the fourth chapter in the selected diagrams. The benefits of the developed system are presented in the conclusion.

  8. From Ship-To-Shore In Real Time: Data Transmission, Distribution, Management, Processing, And Archiving Using Telepresence Technologies And The Inner Space Center

    Science.gov (United States)

    Coleman, D. F.

    2012-12-01

    Most research vessels are equipped with satellite Internet services with bandwidths capable of being upgraded to support telepresence technologies and live shore-based participation. This capability can be used for real-time data transmission to shore, where it can be distributed, managed, processed, and archived. The University of Rhode Island Inner Space Center utilizes telepresence technologies and a growing network of command centers on Internet2 to participate live with a variety of research vessels and their ocean observing and sampling systems. High-bandwidth video streaming, voice-over-IP telecommunications, and real-time data feeds and file transfers enable users on shore to take part in the oceanographic expeditions as if they were present on the ship, working in the lab. Telepresence-enabled systematic ocean exploration and similar programs represent a significant and growing paradigm shift that can change the future of seagoing ocean observations using research vessels. The required platform is the ship itself, and users of the technology rely on the ship-based technical teams, but remote and distributed shore-based science users, students, educators, and the general public can now take part by being aboard virtually.

  9. Assessing the spatial distribution of methadone clinic clients and their access to treatment

    Directory of Open Access Journals (Sweden)

    Wong Ngai

    2010-07-01

    Full Text Available Abstract Using Geographic Information System (GIS, the spatial distribution of methadone clinic clients and their utilization of a treatment service in Hong Kong was analysed. A majority (93.7% of the 63 methadone users recruited were residing in the same district, of which 84.1% spent not more than 15 minutes for traveling. Walking (55.6% was the commonest transport mode followed by cycling (30.2%. There was no distance decay effect on traveling time, but an association between distance and transport selection could be demonstrated. The residence locations displayed a compact distribution, merging with the general population without any evidence of clustering. Though the distribution of methadone users could have been shaped by the location of clinic, it can also be concluded that methadone clinics at convenient locations are needed if maintenance is a key determinant of service effectiveness.

  10. The Yohkoh Legacy Archive

    Science.gov (United States)

    Acton, L. W.; Takeda, A.; McKenzie, D. E.

    2008-12-01

    Yohkoh was a Japan/US/UK mission for the study of high energy processes on the sun. Scientific operation extended from September 1991 until 14 December 2001, nearly an entire solar activity cycle. Observations included full-disk soft and hard x-ray imaging, hard x-ray spectroscopy, and high resolution flare spectroscopy in S XV, Ca XIX, Fe XXV and Fe XXVI from the Bent Crystal Spectrometer (BCS). The Yohkoh Legacy Archive (YLA) brings together all Yohkoh observational data along with extensive documentation required for a full understanding of instrumentation, mission operations, and data reduction and correction. Extensive meta-data aid the user in efficiently accessing the data base. Creation of the YLA has been the work of 8 years; the top objective has been to present the extensive Yohkoh database in a form fully usable for scientists or students who are unfamiliar with Yohkoh instrumentation. The YLA may be accessed at http://solar.physics.montana.edu/ylegacy or through the Virtual Solar Observatory (VSO), although the VSO capability is still under development. Data from the Yohkoh hard x-ray instruments and BCS are presented in flare list formats. The Soft X-ray Telescope (SXT) images are available in quantitative and movie formats. This long, uniform, archive of SXT images is especially useful for solar cycle studies as well as high resolution soft x-ray flare studies. Examples of YLA data products and research enabled by the archive will be presented.

  11. 多域环境下的分布式RBAC模型%A distributed role-based access control model for multi-domain environments

    Institute of Scientific and Technical Information of China (English)

    洪帆; 朱贤; 邢光林

    2006-01-01

    Access control in multi-domain environments is an important question in building coalition between domains. Based on the RBAC access control model and the concepts of secure domain,the role delegation and role mapping are proposed, which support the third-party authorization. A distributed RBAC model is then presented. Finally implementation issues are discussed.

  12. Visualizing archives: Spanish archives map

    OpenAIRE

    Colmenero-Ruiz, María-Jesús

    2016-01-01

    The 2014/2015 academic year was the first to be taught the Master in Archives, Records Management and Digital Continuity at the University Carlos III Madrid, based on a blended learning model of attendance. This article describes the implementation of a visualization project based on geolocation of Spanish archives and its justification. The project arose from an optional practice proposed to the students of the subject “Re-use of data and documents” of this master course. This subject is opt...

  13. Archival Research Catalog (ARC) Archival Descriptions

    Data.gov (United States)

    National Archives and Records Administration — The Archival Research Catalog (ARC) data set provides archival descriptions of the permanent holdings of the federal government in the custody of the National...

  14. Distributed fiber Raman amplification in long reach PON bidirectional access links

    DEFF Research Database (Denmark)

    Tafur Monroy, Idelfonso; Kjær, Rasmus; Öhman, Filip;

    2008-01-01

    Distributed Raman fiber amplification is proposed and experimentally demonstrated to support long reach passive optical network (PON) links. An 80 km, bidirectional, single fiber link is demonstrated using both standard intensity optical modulators at 10 Gb/s and up to 7.5 Gb/s using novel...

  15. Encoded Archival Context (EAC) and Archival Description: Rationale and Background

    Science.gov (United States)

    Szary, Richard V.

    2005-01-01

    The use of contextual information about the creators and users of archival and manuscript resources has always been a critical method for discovering and providing access to them. Traditionally, this information has been unstructured and ephemeral, being part of the knowledge that experienced staff bring to reference queries. The development of…

  16. A Bayesian Game-Theoretic Approach for Distributed Resource Allocation in Fading Multiple Access Channels

    Directory of Open Access Journals (Sweden)

    Gaoning He

    2010-01-01

    Full Text Available A Bayesian game-theoretic model is developed to design and analyze the resource allocation problem in K-user fading multiple access channels (MACs, where the users are assumed to selfishly maximize their average achievable rates with incomplete information about the fading channel gains. In such a game-theoretic study, the central question is whether a Bayesian equilibrium exists, and if so, whether the network operates efficiently at the equilibrium point. We prove that there exists exactly one Bayesian equilibrium in our game. Furthermore, we study the network sum-rate maximization problem by assuming that the users coordinate according to a symmetric strategy profile. This result also serves as an upper bound for the Bayesian equilibrium. Finally, simulation results are provided to show the network efficiency at the unique Bayesian equilibrium and to compare it with other strategies.

  17. Archiving Community Contributed Data in MAST

    Science.gov (United States)

    Levay, K.; Kamp, I.; Thompson, R.; Smith, M.; White, R. L.

    2007-10-01

    High-Level Science Products (HLSPs) are community contributed, fully processed (reduced, co-added, cosmic-ray cleaned etc.) images and spectra that are ready for scientific analysis. HLSPs also include files such as object catalogs, spectral atlases, and README files describing a given set of data. The Multi-mission Archive at the Space Telescope Science Institute (MAST) solicits HLSPs from the community by (a) sending letters to the PIs of approved Treasury, Archival Legacy and Large proposals on HST, (b) discussing with scientists and distributing flyers at conferences and meetings, (c) newsletter articles, and (d) communicating with authors after reading pertinent journal papers. We work with the scientist to ensure a proper data format (e.g. by using a FITS verifier), a proper description of the data reduction process and the entire data product in the form of an ASCII file (README), and (if necessary) web pages. The HLSPs are kept separate from the original MAST data, although information is preserved to indicate how one is related to the other. Several image-based HLSPs are already provided through the Virtual Observatory (VO) Simple Image Access Protocol (SIAP), and spectral data will eventually be available using the Simple Spectral Access Protocol.

  18. The Public Archives at the NASA Michelson Science Center

    OpenAIRE

    Berriman, G. Bruce

    2007-01-01

    This presentation describes the scientific data sets and user services accessible through the public archive at the Michelson Science Center (MSC). The MSC is charged by NASA with providing long-term data archiving capabilities for the Navigator Program, whose goal is to detect and characterize Earth like planets around stars other than the Sun. The archive makes extensive re-use of the component-based software architecture of the NASA IPAC Infrared Science Archive (IRSA). It also re-uses IRS...

  19. Combining sync&share functionality with filesystem-like access

    CERN Document Server

    CERN. Geneva

    2014-01-01

    In our presentation we will analyse approaches to combine the sync & share functionality with file system-like access to data. While relatively small data volumes (GBs) can be distributed by sync&share application across user devices such as PCs, laptops and mobiles, interacting with really large data volumes (TBs, PBs) may require additional remote data access mechanism such as filesystem-like interface. We will discuss several ways for offering filesystem-like access in addition to sync & share functionality. Todays sync & share solutions may employ various data organisation in the back-end including local and distributed file systems and object stores. Therefore various approaches to providing the client with filesystem-like access are necessary in these systems. We will present possible options to integrate the filesystem-like access with sync&share functionality in the popular sync&share system. We will also show a NDS2 project solution where data backups and archives are kept sec...

  20. Optimal Configuration of Fault-Tolerance Parameters for Distributed Server Access

    DEFF Research Database (Denmark)

    Daidone, Alessandro; Renier, Thibault; Bondavalli, Andrea;

    2013-01-01

    Server replication is a common fault-tolerance strategy to improve transaction dependability for services in communications networks. In distributed architectures, fault-diagnosis and recovery are implemented via the interaction of the server replicas with the clients and other entities such as e...... replicated server architectures. In order to obtain insight into the system behaviour, a set of relevant environment parameters and controllable fault-tolerance parameters are chosen and the dependability/performance trade-off is evaluated....

  1. Access to pharmaceutical products in six European countries – analysis of different pharmaceutical distribution systems

    OpenAIRE

    Evelyn Walter; Aline Dragosits; Monira Said

    2012-01-01

    OBJECTIVES: The aim of the study was to draw a comprehensive picture of the pharmaceutical wholesale sector, outlining its socio-economic importance compared to different distribution systems such as short-line wholesaling, direct sales from manufacturers, Reduced Wholesale Arrangements (RWA) and Direct to Pharmacy (DTP) arrangements. Its role is considered from an economic, effectiveness and, most importantly, a public health viewpoint with qualitative and quantitative methods, focusing on F...

  2. Evaluation of Waterloss Impacts on Water Distribution and Accessibility in Akure, Nigeria

    OpenAIRE

    Olotu Yahaya; Bada Olatunbosun; Ehibor O.G.; Ososomi A.S.

    2014-01-01

    Safe drinking water is a necessity for life. Providing quality drinking water is a critical service that generates revenues for water utilities to sustain their operations. Population growth put an additional strain on the limited resources. The annual volume of water lost is an important indicator of water distribution efficiency, both in individual years, and as a trend over a period of years. Application of deterministic simulation model on public water supply variables r...

  3. New approaches to data access in large-scale distributed system

    OpenAIRE

    Bergua Guerra, Borja

    2015-01-01

    Mención Internacional en el título de doctor A great number of scientific projects need supercomputing resources, such as, for example, those carried out in physics, astrophysics, chemistry, pharmacology, etc. Most of them generate, as well, a great amount of data; for example, a some minutes long experiment in a particle accelerator generates several terabytes of data. In the last years, high-performance computing environments have evolved towards large-scale distributed systems such a...

  4. Making Nuclear Malaysia Email Archives Portable

    International Nuclear Information System (INIS)

    Nuclear Malaysia e-mails can be accessed from any computer and anywhere, even worldwide, via web access. However, this mobility is lost when the e-mails are moved to a personal computer into archive files such as Microsoft Outlook data files. Outlook e-mail archives can only be read on the computer where it is stored. This removal has to be done because of storage space constraints on the e-mail server. This paper shows how e-mail archives can be made portable, brought and read anywhere using a free portable e-mail client application such as Mozilla Thunderbird, Portable Edition. (author)

  5. Federated query services provided by the Seamless SAR Archive project

    Science.gov (United States)

    Baker, S.; Bryson, G.; Buechler, B.; Meertens, C. M.; Crosby, C. J.; Fielding, E. J.; Nicoll, J.; Youn, C.; Baru, C.

    2013-12-01

    The NASA Advancing Collaborative Connections for Earth System Science (ACCESS) seamless synthetic aperture radar (SAR) archive (SSARA) project is a 2-year collaboration between UNAVCO, the Alaska Satellite Facility (ASF), the Jet Propulsion Laboratory (JPL), and OpenTopography at the San Diego Supercomputer Center (SDSC) to design and implement a seamless distributed access system for SAR data and derived data products (i.e. interferograms). A major milestone for the first year of the SSARA project was a unified application programming interface (API) for SAR data search and results at ASF and UNAVCO (WInSAR and EarthScope data archives) through the use of simple web services. A federated query service was developed using the unified APIs, providing users a single search interface for both archives (http://www.unavco.org/ws/brokered/ssara/sar/search). A command line client that utilizes this new service is provided as an open source utility for the community on GitHub (https://github.com/bakerunavco/SSARA). Further API development and enhancements added more InSAR specific keywords and quality control parameters (Doppler centroid, faraday rotation, InSAR stack size, and perpendicular baselines). To facilitate InSAR processing, the federated query service incorporated URLs for DEM (from OpenTopography) and tropospheric corrections (from the JPL OSCAR service) in addition to the URLs for SAR data. This federated query service will provide relevant QC metadata for selecting pairs of SAR data for InSAR processing and all the URLs necessary for interferogram generation. Interest from the international community has prompted an effort to incorporate other SAR data archives (the ESA Virtual Archive 4 and the DLR TerraSAR-X_SSC Geohazard Supersites and Natural Laboratories collections) into the federated query service which provide data for researchers outside the US and North America.

  6. HEASARC Software Archive

    Science.gov (United States)

    White, Nicholas (Technical Monitor); Murray, Stephen S.

    2003-01-01

    (1) Chandra Archive: SAO has maintained the interfaces through which HEASARC gains access to the Chandra Data Archive. At HEASARC's request, we have implemented an anonymous ftp copy of a major part of the public archive and we keep that archive up-to- date. SAO has participated in the ADEC interoperability working group, establishing guidelines or interoperability standards and prototyping such interfaces. We have provided an NVO-based prototype interface, intending to serve the HEASARC-led NVO demo project. HEASARC's Astrobrowse interface was maintained and updated. In addition, we have participated in design discussions surrounding HEASARC's Caldb project. We have attended the HEASARC Users Group meeting and presented CDA status and developments. (2) Chandra CALDB: SA0 has maintained and expanded the Chandra CALDB by including four new data file types, defining the corresponding CALDB keyword/identification structures. We have provided CALDB upgrades for the public (CIAO) and for Standard Data Processing. Approximately 40 new files have been added to the CALDB in these version releases. There have been in the past year ten of these CALDB upgrades, each with unique index configurations. In addition, with the inputs from software, archive, and calibration scientists, as well as CIAO/SDP software developers, we have defined a generalized expansion of the existing CALDB interface and indexing structure. The purpose of this is to make the CALDB more generally applicable and useful in new and future missions that will be supported archivally by HEASARC. The generalized interface will identify additional configurational keywords and permit more extensive calibration parameter and boundary condition specifications for unique file selection. HEASARC scientists and developers from SAO and GSFC have become involved in this work, which is expected to produce a new interface for general use within the current year. (3) DS9: One of the decisions that came from last year

  7. Open Access in Practice

    OpenAIRE

    Machovec, George; Morrison, Heather; Whitehead, Heather

    2006-01-01

    This session addressed some of the practical issues arising from open access. The Colorado Alliance of Research Libraries (CARL) links members with open access resources through the Gold Rush service, which includes 80 open access title lists. Librarians at the Colorado School of Mines have collaborated to develop a subject specialized list of titles - for their own library, and to share with all CARL members through Gold Rush. E-LIS, the Open Archive for Library and Information Studies...

  8. Access to Emissions Distributions and Related Ancillary Data through the ECCAD database

    Science.gov (United States)

    Darras, Sabine; Enriquez, Edgar; Granier, Claire; Liousse, Catherine; Boulanger, Damien; Fontaine, Alain

    2016-04-01

    The ECCAD database (Emissions of atmospheric Compounds and Compilation of Ancillary Data) provides a user-friendly access to global and regional surface emissions for a large set of chemical compounds and ancillary data (land use, active fires, burned areas, population,etc). The emissions inventories are time series gridded data at spatial resolution from 1x1 to 0.1x0.1 degrees. ECCAD is the emissions database of the GEIA (Global Emissions InitiAtive) project and a sub-project of the French Atmospheric Data Center AERIS (http://www.aeris-data.fr). ECCAD has currently more than 2200 users originating from more than 80 countries. The project benefits from this large international community of users to expand the number of emission datasets made available. ECCAD provides detailed metadata for each of the datasets and various tools for data visualization, for computing global and regional totals and for interactive spatial and temporal analysis. The data can be downloaded as interoperable NetCDF CF-compliant files, i.e. the data are compatible with many other client interfaces. The presentation will provide information on the datasets available within ECCAD, as well as examples of the analysis work that can be done online through the website: http://eccad.aeris-data.fr.

  9. Smart tools manage digital imagery access and workflow

    Science.gov (United States)

    Buzi, Miriam; LaFramboise, William A.

    2000-05-01

    Lockheed Martin's Intelligent Library System (ILS)TM imagery management solution was originally developed for users and distributors of Earth imagery emanating from commercial remote sensing satellites or aircraft. The product is a total hardware and software solution comprised of two main components: SmartArchiverTM digital asset management system and SmartAnalystTM imagery exploration tools. While investigating the latest technologies and developing Intelligent Library System (ILS)TM as a state-of-the-art system, we realized SmartArchiver systems offered robust functionality not available elsewhere for handling large medical imagery files. The SmartArchiver system's features answer the following needs of medical imagery handling: smooth handling of large individual imagery files; easy access to specific imagery or types of imagery; cost-effective storage of historical data and protection of imagery over time; ability to grow an archive to thousands of terabytes; distribution from a central archive to multiple viewing sites; varying levels of resolutions requirements at the viewing stations; strict multi-level security adherence; and automated workflow management. In this paper we detail the features of the system and how they apply to medical imagery management. We also describe how a medical application can be served by the SmartArchiver asset management system.

  10. On Maximizing Journal Article Access, Usage and Impact

    OpenAIRE

    Harnad, Stevan

    2005-01-01

    To maximise journal article access, usage and impact, their authors need to make them openly accessible by self-archiving them in their own institutional repository. Self-archive articles have 50%-250% more citations. Institutions need to require self-archiving as a matter of policy.

  11. The End of the Television Archive as We Know It? The National Archive as an Agent of Historical Knowledge in the Convergence Era

    Directory of Open Access Journals (Sweden)

    Berber Hagedoorn

    2016-07-01

    Full Text Available Professionals in the television industry are working towards a certain future—rather than end—for the medium based on multi-platform storytelling, as well as multiple screens, distribution channels and streaming platforms. They do so rooted in institutional frameworks where traditional conceptualizations of television still persist. In this context, we reflect on the role of the national television archive as an agent of historical knowledge in the convergence era. Contextualisation and infrastructure function as important preconditions for users of archives to find their way through the enormous amounts of audio-visual material. Specifically, we consider the case of the Netherlands Institute for Sound and Vision, taking a critical stance towards the archive’s practices of contextualisation and preservation of audio-visual footage in the convergence era. To do so, this article considers the impact of online circulation, contextualisation and preservation of audio-visual materials in relation to, first, how media policy complicates the re-use of material, and second, the archive’s use by television professionals and media researchers. This article reflects on the possibilities for and benefits of systematic archiving, developments in web archiving, and accessibility of production and contextual documentation of public broadcasters in the Netherlands. We do so based on an analysis of internal documentation, best practices of archive-based history programmes and their related cross-media practices, as well as media policy documentation. We consider how audio-visual archives should deal with the shift towards multi-platform productions, and argue for both a more systematic archiving of production and contextual documentation in the Netherlands, and for media researchers who draw upon archival resources to show a greater awareness of an archive’s history. In the digital age, even more people are part of the archive’s processes of

  12. SeaDataNet - Pan-European infrastructure for marine and ocean data management: Unified access to distributed data sets (www.seadatanet.org)

    Science.gov (United States)

    Schaap, Dick M. A.; Maudire, Gilbert

    2010-05-01

    availability and geographical distribution of marine data, archived at the connected data centres. It provides sufficient information to allow the user to assess the data relevance. Moreover the CDI user interface provides the means for downloading data sets in common formats via a transaction mechanism. The SeaDataNet portal provides registered users access to these distributed data sets via the CDI V1 Directory and a shopping basket mechanism. This allows registered users to locate data of interest and submit their data requests. The requests are forwarded automatically from the portal to the relevant SeaDataNet data centres. This process is controlled via the Request Status Manager (RSM) Web Service at the portal and a Download Manager (DM) java software module, implemented at each of the data centres. The RSM also enables registered users to check regularly the status of their requests and download data sets, after access has been granted. Data centres can follow all transactions for their data sets online and can handle requests which require their consent. The actual delivery of data sets is done between the user and the selected data centre. Very good progress is being made with connecting all SeaDataNet data centres and their data sets to the CDI V1 system. At present the CDI V1 system provides users functionality to discover and download more than 500.000 data sets, a number which is steadily increasing. The SeaDataNet architecture provides a coherent system of the various V1 services and inclusion of the V2 services. For the implementation, a range of technical components have been defined and developed. These make use of recent web technologies, and also comprise Java components, to provide multi-platform support and syntactic interoperability. To facilitate sharing of resources and interoperability, SeaDataNet has adopted the technology of SOAP Web services for various communication tasks. The SeaDataNet architecture has been designed as a multi-disciplinary system

  13. High-Resolution Spatial Distribution and Estimation of Access to Improved Sanitation in Kenya

    Science.gov (United States)

    Jia, Peng; Anderson, John D.; Leitner, Michael; Rheingans, Richard

    2016-01-01

    Background Access to sanitation facilities is imperative in reducing the risk of multiple adverse health outcomes. A distinct disparity in sanitation exists among different wealth levels in many low-income countries, which may hinder the progress across each of the Millennium Development Goals. Methods The surveyed households in 397 clusters from 2008–2009 Kenya Demographic and Health Surveys were divided into five wealth quintiles based on their national asset scores. A series of spatial analysis methods including excess risk, local spatial autocorrelation, and spatial interpolation were applied to observe disparities in coverage of improved sanitation among different wealth categories. The total number of the population with improved sanitation was estimated by interpolating, time-adjusting, and multiplying the surveyed coverage rates by high-resolution population grids. A comparison was then made with the annual estimates from United Nations Population Division and World Health Organization /United Nations Children's Fund Joint Monitoring Program for Water Supply and Sanitation. Results The Empirical Bayesian Kriging interpolation produced minimal root mean squared error for all clusters and five quintiles while predicting the raw and spatial coverage rates of improved sanitation. The coverage in southern regions was generally higher than in the north and east, and the coverage in the south decreased from Nairobi in all directions, while Nyanza and North Eastern Province had relatively poor coverage. The general clustering trend of high and low sanitation improvement among surveyed clusters was confirmed after spatial smoothing. Conclusions There exists an apparent disparity in sanitation among different wealth categories across Kenya and spatially smoothed coverage rates resulted in a closer estimation of the available statistics than raw coverage rates. Future intervention activities need to be tailored for both different wealth categories and nationally

  14. Design of a Free and Open Source Data Processing, Archiving, and Distribution Subsystem for the Ground Receiving Station of the Philippine Scientific Earth Observation Micro-Satellite

    Science.gov (United States)

    Aranas, R. K. D.; Jiao, B. J. D.; Magallon, B. J. P.; Ramos, M. K. F.; Amado, J. A.; Tamondong, A. M.; Tupas, M. E. A.

    2016-06-01

    The Philippines's PHL-Microsat program aims to launch its first earth observation satellite, DIWATA, on the first quarter of 2016. DIWATA's payload consists of a high-precision telescope (HPT), spaceborne multispectral imager (SMI) with liquid crystal tunable filter (LCTF), and a wide field camera (WFC). Once launched, it will provide information about the Philippines, both for disaster and environmental applications. Depending on the need, different remote sensing products will be generated from the microsatellite sensors. This necessitates data processing capability on the ground control segment. Rather than rely on commercial turnkey solutions, the PHL-Microsat team, specifically Project 3:DPAD, opted to design its own ground receiving station data subsystems. This paper describes the design of the data subsystems of the ground receiving station (GRS) for DIWATA. The data subsystems include: data processing subsystem for automatic calibration and georeferencing of raw images as well as the generation of higher level processed data products; data archiving subsystem for storage and backups of both raw and processed data products; and data distribution subsystem for providing a web-based interface and product download facility for the user community. The design covers the conceptual design of the abovementioned subsystems, the free and open source software (FOSS) packages used to implement them, and the challenges encountered in adapting the existing FOSS packages to DIWATA GRS requirements.

  15. Open Access for Librarians in Developing Countries

    OpenAIRE

    Morrison, Heather

    2006-01-01

    The basics of open access are presented, as a starting point for discussion by librarians in developing countries. Open access is defined; resources for searching are presented, and resources for creating open access archives and publications. Policy development needed for open access is explained, along with what librarians in developing countries can do to promote open access.

  16. Access to pharmaceutical products in six European countries – analysis of different pharmaceutical distribution systems

    Directory of Open Access Journals (Sweden)

    Evelyn Walter

    2012-03-01

    Full Text Available OBJECTIVES: The aim of the study was to draw a comprehensive picture of the pharmaceutical wholesale sector, outlining its socio-economic importance compared to different distribution systems such as short-line wholesaling, direct sales from manufacturers, Reduced Wholesale Arrangements (RWA and Direct to Pharmacy (DTP arrangements. Its role is considered from an economic, effectiveness and, most importantly, a public health viewpoint with qualitative and quantitative methods, focusing on France, Germany, Italy, the Netherlands, Spain and the UK.METHODS: First, data has been sourced from annual GIRP and IMS-Health statistics; second, a systematic literature research verified the empirical findings; third, an online-questionnaire was directed to pharmacies. Further data have been sourced from a questionnaire, addressing GIRP-full-member associations and wholesale companies (return rate 86%.RESULTS: On a weighted average, pharmaceutical full-line wholesalers in the observed countries alone pre-finance € 10.2 bn over a period of 41 days the entire medicine-market and secure the cash-flow of the social-insurers (Germany: € 2.60 bn for 38 days; Italy: € 2.27 bn for 68 days; the UK: € 1.48 bn for 36 days; France: € 1.28 bn for 22 days; Spain: € 969.76 m for 27 days; the Netherlands: € 399.09 m for 30 days on average. On average, pharmaceutical full-line wholesalers are bundling products of 18.28 manufacturers per delivery. The process costs would increase by € 164,922.43 to € 171,510.06 per year, if there were no pharmaceutical full-line wholesalers. These additional costs would have to be paid by manufacturers, pharmacies and finally by patients. Regarding the satisfaction with different distribution models, the results of the online-questionnaire show that pharmacists in the observed countries are very satisfied with the distribution through their pharmaceutical full-line wholesalers.CONCLUSIONS: The study showed that

  17. Radial distribution of lead and lead isotopes in stem wood of Norway spruce: A reliable archive of pollution trends in Central Europe

    Energy Technology Data Exchange (ETDEWEB)

    Novak, M.; Mikova, J.; Krachler, M.; Kosler, J.; Erbanova, L.; Prechova, E.; Jackova, I.; Fottova, D. [Czech Geological Survey, Prague (Czech Republic)

    2010-08-01

    Annual growth rings of a common hardwood species, Picea abies L., were investigated as a potential archive of past atmospheric Pb pollution. Wide distribution of trees in terrestrial settings and straightforward chronology are two advantages of this potential geochemical archive, but several processes described in the literature may obscure the trends in past Pb deposition. These confounding factors include, e.g., radial post-depositional mobility of Pb in xylem, and ecosystem acidification leading to higher bioavailability of Pb. One- to five-year annual wood increments were analyzed for Pb concentrations and {sup 206}Pb/{sup 207}Pb ratios at Jezeri (JEZ), Uhlirska (UHL) and Na Lizu (LIZ), three sites in the Czech Republic, differing in atmospheric Pb loads. Three to four trees per site were included in the study. Distinct Pb concentration maxima between 1960 and 1990 at the two heavily polluted sites (JEZ and UHL) coincided with historical Pb emissions known from inventories of industrial production. No Pb concentration maxima were found at one site, LIZ, situated in a national park 150 km from major pollution sources. Spruce tree rings from JEZ, located just 5 km from coal-burning power stations, contained a large proportion of coal-derived Pb (a high-{sup 206}Pb/{sup 207}Pb ratio of 1.19). A coal-related maximum in {sup Pb}/{sup 207}Pb in JEZ tree rings was found using two different analytical techniques, laser-ablation multi-collector ICP MS, and single-collector sector-field ICP MS. In a three-isotope graph ({sup 206}Pb/{sup 207}Pb vs. {sup 208}Pb/{sup 207}Pb) tree-ring data plotted into the field of ombrotrophic (i.e., rain-fed) peat bogs, suggesting negligible contribution of bedrock-derived Pb in the xylem. We concluded that none of the potential confounding factors played a major role at our sites. Annual growth rings of P. abies in Central Europe faithfully recorded historical changes in atmospheric Pb depositions.

  18. Gaia Archive Implementation: Waiting for One Billion Stars

    Science.gov (United States)

    Salgado, J.; Gonzalez, J.; Gutierrez, R.; Segovia, J. C.; Osuna, P.; Arviset, C.

    2015-09-01

    Gaia was launched last 19 December 2013 and it will produce in a short term one of the biggest and most complete source catalogs in astronomy. That represents a challenge on different areas: validation, big data management, comparison with other catalogs and the effort to create relevant web services to make accessible this information to the astronomers in an efficient way. We present the current status of the Gaia Archive implementation, including the TAP+ interface, crossmatch capabilities, full catalog operations like, e.g., full sky histograms generation and the future plans ongoing to be prepared for the Gaia catalog distribution in 2015. Also, we present the workflow followed to share data and services with all the different groups inside the Gaia Consortium, one of the biggest cooperation projects in astronomy, in order to interface with the main Gaia Archive at ESAC (European Space Astronomy Centre) and how the data will be propagated to the different main data centres across Europe.

  19. Archiving in the networked world

    OpenAIRE

    Seadle, Michael

    2011-01-01

    Purpose – The purpose of this paper is to investigate how extensively LOCKSS/CLOCKSS, Portico, and e-Depot provide long-term digital archiving for the journals listed in the Directory of Open Access Journals (DOAJ). Design/methodology/approach – The paper uses publicly available online data, which are processed in a set of PERL programs to measure the number of DOAJ articles in the three archiving systems. Findings – The findings show that only 8 per cent of the DOAJ titles are in LOCKS...

  20. Popular Content Distribution in CR-VANETs with Joint Spectrum Sensing and Channel Access using Coalitional Games

    Directory of Open Access Journals (Sweden)

    Tianyu Wang

    2014-07-01

    Full Text Available Driven by both safety concerns and commercial interests, popular content distribution (PCD, as one of the key services offered by vehicular networks, has recently received considerable attention. In this paper, we address the PCD problem in highway scenarios, in which a popular file is distributed to a group of onboard units (OBUs driving through an area of interest (AoI. Due to high speeds of vehicles and deep fading of vehicle-to-roadside (V2R channels, the OBUs may not finish downloading the entire file. Consequently, a peer-to-peer (p2p network should be constructed among the OBUs for completing the file delivery process. Here, we apply the cognitive radio technique for vehicle-to-vehicle communications and propose a cooperative approach based on coalition formation games, which jointly considers the spectrum sensing and channel access performance. Simulation results show that our approach presents a considerable performance improvement compared with the non-cooperative case.

  1. Evolution of archiving approaches, AECL, Canada. Annex II-13

    International Nuclear Information System (INIS)

    It is unlikely that CD based archives will work well for long term (over ten years) archives due to ever-changing PC software and upgrading of equipment. Stand-alone and proprietary software should be avoided for long term archival projects. Documents should be archived to multiple page TIFF or PDF file format for long term storage, to ensure that the complete document remains intact. Regular and ongoing inspections and assessment of long term record archives should be performed to ensure the readability, access and usability of records

  2. Availability, Access, Authenticity, and Persistence: Creating the Environment for Permanent Public Access to Electronic Government Information.

    Science.gov (United States)

    Barnum, George

    2002-01-01

    Discusses efforts by the Federal Depository Library Program to make information accessible more or mostly by electronic means. Topics include Web-based locator tools; collection development; digital archives; bibliographic metadata; and access tools and user interfaces. (Author/LRW)

  3. ESA New Generation Science Archives: State of the Art Data Management Techniques for SOHO and EXOSAT Science Archives

    Science.gov (United States)

    Leon, I.; Arviset, C.; Baines, D.; Barbarisi, I.; Castellanos, J.; Cheek, N.; Costa, H.; Fajersztejn, N.; Fernandez, M.; Gonzalez, J.; Laruelo, A.; Ortiz, I.; Osuna, P.; Salgado, J.; Stebe, A.; Tapiador, D.

    2010-12-01

    The Science Archives and VO Team (SAT) has undertaken the effort to build state of the art sub-systems for its new generation of archives. The new technology has already been applied to the creation of the SOHO and EXOSAT Science Archives and will be used to re-engineer some of the already existing ESA Science Archives in the future. As part of the new archives, the Data Layer infrastructure has had to achieve the goal of delivering an efficient and reliable access to millions of searchable elements in short response times.

  4. Watershed Modeling Applications with the Open-Access Modular Distributed Watershed Educational Toolbox (MOD-WET) and Introductory Hydrology Textbook

    Science.gov (United States)

    Huning, L. S.; Margulis, S. A.

    2014-12-01

    Traditionally, introductory hydrology courses focus on hydrologic processes as independent or semi-independent concepts that are ultimately integrated into a watershed model near the end of the term. When an "off-the-shelf" watershed model is introduced in the curriculum, this approach can result in a potential disconnect between process-based hydrology and the inherent interconnectivity of processes within the water cycle. In order to curb this and reduce the learning curve associated with applying hydrologic concepts to complex real-world problems, we developed the open-access Modular Distributed Watershed Educational Toolbox (MOD-WET). The user-friendly, MATLAB-based toolbox contains the same physical equations for hydrological processes (i.e. precipitation, snow, radiation, evaporation, unsaturated flow, infiltration, groundwater, and runoff) that are presented in the companion e-textbook (http://aqua.seas.ucla.edu/margulis_intro_to_hydro_textbook.html) and taught in the classroom. The modular toolbox functions can be used by students to study individual hydrologic processes. These functions are integrated together to form a simple spatially-distributed watershed model, which reinforces a holistic understanding of how hydrologic processes are interconnected and modeled. Therefore when watershed modeling is introduced, students are already familiar with the fundamental building blocks that have been unified in the MOD-WET model. Extensive effort has been placed on the development of a highly modular and well-documented code that can be run on a personal computer within the commonly-used MATLAB environment. MOD-WET was designed to: 1) increase the qualitative and quantitative understanding of hydrological processes at the basin-scale and demonstrate how they vary with watershed properties, 2) emphasize applications of hydrologic concepts rather than computer programming, 3) elucidate the underlying physical processes that can often be obscured with a complicated

  5. Archival storage solutions for PACS

    Science.gov (United States)

    Chunn, Timothy

    1997-05-01

    While they are many, one of the inhibitors to the wide spread diffusion of PACS systems has been robust, cost effective digital archive storage solutions. Moreover, an automated Nearline solution is key to a central, sharable data repository, enabling many applications such as PACS, telemedicine and teleradiology, and information warehousing and data mining for research such as patient outcome analysis. Selecting the right solution depends on a number of factors: capacity requirements, write and retrieval performance requirements, scaleability in capacity and performance, configuration architecture and flexibility, subsystem availability and reliability, security requirements, system cost, achievable benefits and cost savings, investment protection, strategic fit and more.This paper addresses many of these issues. It compares and positions optical disk and magnetic tape technologies, which are the predominant archive mediums today. Price and performance comparisons will be made at different archive capacities, plus the effect of file size on storage system throughput will be analyzed. The concept of automated migration of images from high performance, high cost storage devices to high capacity, low cost storage devices will be introduced as a viable way to minimize overall storage costs for an archive. The concept of access density will also be introduced and applied to the selection of the most cost effective archive solution.

  6. The new European Hubble archive

    Science.gov (United States)

    De Marchi, Guido; Arevalo, Maria; Merin, Bruno

    2016-01-01

    The European Hubble Archive (hereafter eHST), hosted at ESA's European Space Astronomy Centre, has been released for public use in October 2015. The eHST is now fully integrated with the other ESA science archives to ensure long-term preservation of the Hubble data, consisting of more than 1 million observations from 10 different scientific instruments. The public HST data, the Hubble Legacy Archive, and the high-level science data products are now all available to scientists through a single, carefully designed and user friendly web interface. In this talk, I will show how the the eHST can help boost archival research, including how to search on sources in the field of view thanks to precise footprints projected onto the sky, how to obtain enhanced previews of imaging data and interactive spectral plots, and how to directly link observations with already published papers. To maximise the scientific exploitation of Hubble's data, the eHST offers connectivity to virtual observatory tools, easily integrates with the recently released Hubble Source Catalog, and is fully accessible through ESA's archives multi-mission interface.

  7. Medical image archive node simulation and architecture

    Science.gov (United States)

    Chiang, Ted T.; Tang, Yau-Kuo

    1996-05-01

    It is a well known fact that managed care and new treatment technologies are revolutionizing the health care provider world. Community Health Information Network and Computer-based Patient Record projects are underway throughout the United States. More and more hospitals are installing digital, `filmless' radiology (and other imagery) systems. They generate a staggering amount of information around the clock. For example, a typical 500-bed hospital might accumulate more than 5 terabytes of image data in a period of 30 years for conventional x-ray images and digital images such as Magnetic Resonance Imaging and Computer Tomography images. With several hospitals contributing to the archive, the storage required will be in the hundreds of terabytes. Systems for reliable, secure, and inexpensive storage and retrieval of digital medical information do not exist today. In this paper, we present a Medical Image Archive and Distribution Service (MIADS) concept. MIADS is a system shared by individual and community hospitals, laboratories, and doctors' offices that need to store and retrieve medical images. Due to the large volume and complexity of the data, as well as the diversified user access requirement, implementation of the MIADS will be a complex procedure. One of the key challenges to implementing a MIADS is to select a cost-effective, scalable system architecture to meet the ingest/retrieval performance requirements. We have performed an in-depth system engineering study, and developed a sophisticated simulation model to address this key challenge. This paper describes the overall system architecture based on our system engineering study and simulation results. In particular, we will emphasize system scalability and upgradability issues. Furthermore, we will discuss our simulation results in detail. The simulations study the ingest/retrieval performance requirements based on different system configurations and architectures for variables such as workload, tape

  8. Public Access to NASA's Earth Science Data

    Science.gov (United States)

    Behnke, J.; James, N.

    2013-12-01

    Many steps have been taken over the past 20 years to make NASA's Earth Science data more accessible to the public. The data collected by NASA represent a significant public investment in research. NASA holds these data in a public trust to promote comprehensive, long-term Earth science research. Consequently, NASA developed a free, open and non-discriminatory policy consistent with existing international policies to maximize access to data and to keep user costs as low as possible. These policies apply to all data archived, maintained, distributed or produced by NASA data systems. The Earth Observing System Data and Information System (EOSDIS) is a major core capability within NASA Earth Science Data System Program. EOSDIS is designed to ingest, process, archive, and distribute data from approximately 90 instruments. Today over 6800 data products are available to the public through the EOSDIS. Last year, EOSDIS distributed over 636 million science data products to the user community, serving over 1.5 million distinct users. The system supports a variety of science disciplines including polar processes, land cover change, radiation budget, and most especially global climate change. A core philosophy of EOSDIS is that the general user is best served by providing discipline specific support for the data. To this end, EOSDIS has collocated NASA Earth science data with centers of science discipline expertise, called Distributed Active Archive Centers (DAACs). DAACs are responsible for data management, archive and distribution of data products. There are currently twelve DAACs in the EOSDIS system. The centralized entrance point to the NASA Earth Science data collection can be found at http://earthdata.nasa.gov. Over the years, we have developed several methods for determining needs of the user community including use of the American Customer Satisfaction Index survey and a broad metrics program. Annually, we work with an independent organization (CFI Group) to send this

  9. Passive Archives or Storages for Action?

    DEFF Research Database (Denmark)

    McQuaid, Sara Dybris

    comprehensive and egalitarian approach to accessing the past found in digital oral history; and the other considering the ‘power’ of the digital archive. Adopting the idea that story-telling as a form of ‘witnessing’ is also an ethico-political act (Kurasawa 2009), the paper discusses what kind of discourses...... may be empowered by the digitalisation of memory in oral history archives. The contested realm in which these archives operate condition how they are funded, assembled, described, opened and maintained in the process of which some stories may be privileged and others marginalised or subsumed (Brown...

  10. Performing Archives/Archives of Performance

    DEFF Research Database (Denmark)

    Performing Archives/Archives of Performance contributes to the ongoing critical discussions of performance and its disappearance, of the ephemeral and its reproduction, of archives and mediatized recordings of liveness. The many contributions by excellent scholars and artists from a broad range...... of interdisciplinary fields as well as from various locations in research geographies demonstrate that despite the extensive discourse on the relationship between performance and the archive, inquiry into the productive tensions between ephemerality and permanence is by no means outdated or exhausted. New ways...... of understanding archives, history, and memory emerge and address theories of enactment and intervention, while concepts of performance constantly proliferate and enable a critical focus on archival residue. The contributions in Performing Archives/Archives of Performance cover philosophical inquiries as well...

  11. It’s a Repository, it’s a Depository, it’s an Archive...: Open Access, Digital Collections and Value

    Directory of Open Access Journals (Sweden)

    Guédon, Jean-Claude

    2009-06-01

    Full Text Available In the context of Open Access to scientific and scholarly literature, repositories, both institutional and subject-based, have come to play an important role. However, the nature of repositories appears to be difficult to pin down as each category of people involved seems to have a different vision. The shifting interpretation of repositories has been a source of weakness in the promotion of these instruments. It is suggested here that this situation is not unique to repositories; on the contrary, all sociotechnical objects go through such a phase if we are to follow some of the important studies coming from the “Social construction of technology” school of thought. This suggests that technical objects succeed when relevant social groups interpret the meaning and function of a particular technology. By examining a number of events around repositories, in particular struggles around the possibility of mandating deposits, it is possible to identify a number of relevant social groups, as well as examine how they can either ally with each other or are displaying conflictual fault-lines between them. Using this form of analysis should help develop strategies to develop repositories.En el contexto del Acceso Abierto a la literatura científica y académica, los repositorios, tanto los institucionales como los disciplinares o temáticos, van a jugar un papel importante. No obstante, resulta difícil caracterizar la naturaleza de los repositorios debido a que cada categoría de personas relacionadas con ellos parecen tener diferente perspectiva. La cambiante interpretación que han teniendo los repositorios ha constituido una fuente de debilidad para la promoción de este instrumento. Aquí se sugiere que esta situación no se da sólo en el caso de los repositorios; al contrario, como muestran algunos importantes estudios provenientes de la escuela de pensamiento que aboga por la “Construcción social de la tecnología”, todos los objetos

  12. DICOM-compliant PACS with CD-based image archival

    Science.gov (United States)

    Cox, Robert D.; Henri, Christopher J.; Rubin, Richard K.; Bret, Patrice M.

    1998-07-01

    This paper describes the design and implementation of a low- cost PACS conforming to the DICOM 3.0 standard. The goal was to provide an efficient image archival and management solution on a heterogeneous hospital network as a basis for filmless radiology. The system follows a distributed, client/server model and was implemented at a fraction of the cost of a commercial PACS. It provides reliable archiving on recordable CD and allows access to digital images throughout the hospital and on the Internet. Dedicated servers have been designed for short-term storage, CD-based archival, data retrieval and remote data access or teleradiology. The short-term storage devices provide DICOM storage and query/retrieve services to scanners and workstations and approximately twelve weeks of 'on-line' image data. The CD-based archival and data retrieval processes are fully automated with the exception of CD loading and unloading. The system employs lossless compression on both short- and long-term storage devices. All servers communicate via the DICOM protocol in conjunction with both local and 'master' SQL-patient databases. Records are transferred from the local to the master database independently, ensuring that storage devices will still function if the master database server cannot be reached. The system features rules-based work-flow management and WWW servers to provide multi-platform remote data access. The WWW server system is distributed on the storage, retrieval and teleradiology servers allowing viewing of locally stored image data directly in a WWW browser without the need for data transfer to a central WWW server. An independent system monitors disk usage, processes, network and CPU load on each server and reports errors to the image management team via email. The PACS was implemented using a combination of off-the-shelf hardware, freely available software and applications developed in-house. The system has enabled filmless operation in CT, MR and ultrasound within

  13. Digital networking and archiving with ACOM T.O.P.

    Science.gov (United States)

    Saalfrank, W

    1998-10-01

    The international DICOM 3 standard for a single patient record exchange media (CD-R) provided the necessary definition for digital recording and distribution of cardiac angiographic patient data. The medical industry developed archive and review stations that allow the replacement of the 35 mm cine film. SIEMENS launched ACOM. T.O.P. in late 1995. The benefits and technical solution are presented in this paper. Today, the solution for networked real-time image data distribution within the hospital has become reality. Further integration of hemodynamic data, connectivity of hospital information systems, easy access and distribution of such high volume data from and to remote locations is well under way. ACOM. net is used as an example for the realization of commercial products to fulfill the demands of cardiologist and hospital administrators. PMID:10453385

  14. Better Living Through Metadata: Examining Archive Usage

    Science.gov (United States)

    Becker, G.; Winkelman, S.; Rots, A.

    2013-10-01

    The primary purpose of an observatory's archive is to provide access to the data through various interfaces. User interactions with the archive are recorded in server logs, which can be used to answer basic questions like: Who has downloaded dataset X? When did she do this? Which tools did she use? The answers to questions like these fill in patterns of data access (e.g., how many times dataset X has been downloaded in the past three years). Analysis of server logs provides metrics of archive usage and provides feedback on interface use which can be used to guide future interface development. The Chandra X-ray Observatory is fortunate in that a database to track data access and downloads has been continuously recording such transactions for years; however, it is overdue for an update. We will detail changes we hope to effect and the differences the changes may make to our usage metadata picture. We plan to gather more information about the geographic location of users without compromising privacy; create improved archive statistics; and track and assess the impact of web “crawlers” and other scripted access methods on the archive. With the improvements to our download tracking we hope to gain a better understanding of the dissemination of Chandra's data; how effectively it is being done; and perhaps discover ideas for new services.

  15. Reference Services in Archives.

    Science.gov (United States)

    Whalen, Lucille; And Others

    1986-01-01

    This 16-article issue focuses on history, policy, services, users, organization, evaluation, and automation of the archival reference process. Collections at academic research libraries, a technical university, Board of Education, business archives, a bank, labor and urban archives, a manuscript repository, religious archives, and regional history…

  16. CLEAR: a credible method to evaluate website archivability

    OpenAIRE

    Banos, V.; Kim, Y.; Ross, S; Manolopoulos, Y.

    2013-01-01

    Web archiving is crucial to ensure that cultural, scientific and social heritage on the web remains accessible and usable over time. A key aspect of the web archiving process is optimal data extraction from target websites. This procedure is difficult for such reasons as, website complexity, plethora of underlying technologies and ultimately the open-ended nature of the web. The purpose of this work is to establish the notion of Website Archivability (WA) and to introduce the ...

  17. Editions of You: A DIY Archive of DIY Practice

    OpenAIRE

    Busby, Lisa

    2015-01-01

    This chapter, using one archive and archivist as case study, highlighted pertinent issues around popular music archiving and DIY heritage frameworks - including ones of support, access, curatorship, and the shift from physical to digital. There is a growing awareness around the world of the pressing need to archive the material remnants of popular music so as to safeguard the national and local histories of this cultural form. Current research suggests that in the past 20 or so years ther...

  18. Preserve Scientific Electronic Journals: A Study of Archiving Initiatives

    OpenAIRE

    Galyani Moghaddam, Golnessa

    2008-01-01

    This paper seeks to review the archiving initiatives of scientific journals created and supported by various organizations or institutions. A review of nine archiving initiatives including JSTOR, Portico, E-Print Repositories, Open Access Model, LOCKSS, OCLC Digital Archive, JISC PubMed Central and KB e-Depot was carried out. The paper focuses mainly on the initiatives by an analytical approach. The paper provides a useful starting-point to anyone who wants to know about the preserving scient...

  19. Archives and the computer

    CERN Document Server

    Cook, Michael Garnet

    1980-01-01

    Archives and the Computer deals with the use of the computer and its systems and programs in archiving data and other related materials. The book covers topics such as the scope of automated systems in archives; systems for records management, archival description, and retrieval; and machine-readable archives. The book also features examples of systems for records management from different institutions such as theTyne and Wear Archive Department, Dyfed Record Office, and the University of Liverpool. Included in the last part are appendices. Appendix A is a directory of archival systems, Appen

  20. Archives and the computer

    CERN Document Server

    Cook, Michael Garnet

    1986-01-01

    Archives and the Computer deals with the use of the computer and its systems and programs in archiving data and other related materials. The book covers topics such as the scope of automated systems in archives; systems for records management, archival description, and retrieval; and machine-readable archives. The selection also features examples of archives from different institutions such as the University of Liverpool, Berkshire County Record Office, and the National Maritime Museum.The text is recommended for archivists who would like to know more about the use of computers in archiving of

  1. Energy-Efficiency Analysis of a Distributed Queuing Medium Access Control Protocol for Biomedical Wireless Sensor Networks in Saturation Conditions

    Directory of Open Access Journals (Sweden)

    Christos Verikoukis

    2011-01-01

    Full Text Available The aging population and the high quality of life expectations in our society lead to the need of more efficient and affordable healthcare solutions. For this reason, this paper aims for the optimization of Medium Access Control (MAC protocols for biomedical wireless sensor networks or wireless Body Sensor Networks (BSNs. The hereby presented schemes always have in mind the efficient management of channel resources and the overall minimization of sensors’ energy consumption in order to prolong sensors’ battery life. The fact that the IEEE 802.15.4 MAC does not fully satisfy BSN requirements highlights the need for the design of new scalable MAC solutions, which guarantee low-power consumption to the maximum number of body sensors in high density areas (i.e., in saturation conditions. In order to emphasize IEEE 802.15.4 MAC limitations, this article presents a detailed overview of this de facto standard for Wireless Sensor Networks (WSNs, which serves as a link for the introduction and initial description of our here proposed Distributed Queuing (DQ MAC protocol for BSN scenarios. Within this framework, an extensive DQ MAC energy-consumption analysis in saturation conditions is presented to be able to evaluate its performance in relation to IEEE 802.5.4 MAC in highly dense BSNs. The obtained results show that the proposed scheme outperforms IEEE 802.15.4 MAC in average energy consumption per information bit, thus providing a better overall performance that scales appropriately to BSNs under high traffic conditions. These benefits are obtained by eliminating back-off periods and collisions in data packet transmissions, while minimizing the control overhead.

  2. Data Archive and Portal Thrust Area Strategy Report

    Energy Technology Data Exchange (ETDEWEB)

    Sivaraman, Chitra; Stephan, Eric G.; Macduff, Matt C.; Hagler, Clay D.

    2014-09-30

    This report describes the Data Archive and Portal (DAP), a key capability of the U.S. Department of Energy's Atmosphere to Electron (A2e) initiative. The DAP Thrust Area Planning Group was organized to develop a plan for deploying this capability. Primarily, the report focuses on a distributed system--a DOE Wind Cloud--that functions as a repository for all A2e data. The Wind Cloud will be accessible via an open, easy-to-navigate user interface that facilitates community data access, interaction, and collaboration. DAP management will work with the community, industry, and international standards bodies to develop standards for wind data and to capture important characteristics of all data in the Wind Cloud.

  3. Multimedia medical archiving system

    Science.gov (United States)

    Sood, Arun K.; Atallah, George C.; Rao, Amar; Perez-Lopez, Kathleen G.; Freedman, Matthew T.

    1995-11-01

    The demand for digital radiological imaging and archiving applications has been increasingly rapidly. These digital applications offer significant advantages to the physician over the traditional film-based technique. They result in faster and better quality services, support remote access and conferencing capabilities, provide on demand service availability, eliminate film processing costs, and most significantly, they are suitable services for the evolving global information super highway. Several existing medical multimedia systems incorporate and utilize those advanced technical features. However, radiologists are seeking an order of magnitude improvement in the overall current system design and performance indices (such as transactions response times, system utilization and throughput). One of the main technical concern radiologists are raising is the miss-filing occurrence. This even will decrease the radiologist productivity; introduce unnecessarily workload; and will result in total customer dissatisfaction. This paper presents Multimedia Medical Archiving System, which can be used in hospitals and medical centers for storing and retrieving radiological images. Furthermore, this paper emphasizes a viable solution for the miss-filing problem. The results obtained demonstrate and quantify the improvement in the overall radiological operations. Specifically this paper demonstrates an order of 80% improvement in the response time for retrieving images. This enhancement in system performance directly translates to a tremendous improvement in the radiologist's productivity.

  4. Sea level measured by tide gauges from global oceans as part of the Joint Archive for Sea Level (JASL) from 1 January 1901 to 31 May 1997 (NODC Accession 9700212)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Joint Archive for Sea Level (JASL), a collaboration between the University of Hawaii Sea Level Center (UHSLC) and the World Data Center-A for Oceanography, the...

  5. Sea level measured by tide gauges from global oceans as part of the Joint Archive for Sea Level (JASL) from 1 January 1901 to 31 December 2001 (NODC Accession 0000754)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Joint Archive for Sea Level (JASL), a collaboration between the University of Hawaii Sea Level Center (UHSLC) and the World Data Center-A for Oceanography, the...

  6. Temperature, pressure and light data collected by attached Archival Transmitting Tags to Salvelinus malma (Dolly Varden trout) in the Wulik River, Alaska, during 2012-06 to 2013-10 (NODC Accession 0119954)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset contains data collected by electronic tags (Pop-up Satellite Archival Transmitting) attached to Salvelinus malma (Dolly Varden trout) in the Wulik...

  7. Sea level measured by tide gauges from global oceans as part of the Joint Archive for Sea Level (JASL) from 1 January 1905 to 30 April 1996 (NODC Accession 9600141)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Joint Archive for Sea Level (JASL), a collaboration between the University of Hawaii Sea Level Center (UHSLC) and the World Data Center-A for Oceanography, the...

  8. Sea level measured by tide gauges from global oceans as part of the Joint Archive for Sea Level (JASL) from 21 June 1877 to 31 December 2003 (NCEI Accession 0001235)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Joint Archive for Sea Level (JASL), a collaboration between the University of Hawaii Sea Level Center (UHSLC) and the World Data Center-A for Oceanography, the...

  9. Sea level measured by tide gauges from global oceans as part of the Joint Archive for Sea Level (JASL) from 1 January 1901 to 1 May 1998 (NODC Accession 9800124)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Joint Archive for Sea Level (JASL), a collaboration between the University of Hawaii Sea Level Center (UHSLC) and the World Data Center-A for Oceanography, the...

  10. Sea level measured by tide gauges from global oceans as part of the Joint Archive for Sea Level (JASL) from 1 January 1901 to 1 October 2000 (NODC Accession 0000346)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Joint Archive for Sea Level (JASL), a collaboration between the University of Hawaii Sea Level Center (UHSLC) and the World Data Center-A for Oceanography, the...

  11. Sea level measured by tide gauges from global oceans as part of the Joint Archive for Sea Level (JASL) from 21 June 1877 to 31 December 2004 (NODC Accession 0002610)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Joint Archive for Sea Level (JASL), a collaboration between the University of Hawaii Sea Level Center (UHSLC) and the World Data Center-A for Oceanography, the...

  12. National Archives Catalog and API

    Data.gov (United States)

    National Archives and Records Administration — The National Archives Catalog is the online catalog of NARA's nationwide holdings in the Washington, DC area, Regional Archives, and Presidential Libraries.

  13. Digitization and digital archiving a practical guide for librarians

    CERN Document Server

    Leggett, Elizabeth R

    2014-01-01

    Modern library patrons are embracing the ease with which information can be accessed digitally, and so many librarians are currently working toward making information available electronically. Digitization and Digital Archiving: A Practical Guide for Librarians is a comprehensive guide with step-by-step instructions for forming digital archives.

  14. The municipal archives of the City of New York

    OpenAIRE

    Cobb, Kenneth R.

    1999-01-01

    Ith some 100,000 cubic feet of civic documents, vital and building records, libers, films and photographs, New York City's Municipal Archives is a magnet for researchers. Among those who benefit from centralized access to the wealth of material deposited in the Archives by city government agencies are genealogists, urban scholars and architectural historians.

  15. Open Access Italia 2010

    OpenAIRE

    De Robbio, Antonella

    2010-01-01

    The presentation is an update of the state of the art of Open Access in Italy which was illustrated during the 2009 Open Access Week. It covers the milestones of Open Access in Italy and the recommendations of the CRUI national Working Group that has recently reached the number of 60 members. It illustrates the CRUI WG agenda for the next three years which focuses on the following three issues: open courseware, open archive metadata, and a survey of the attitudes of Italian publishers toward...

  16. 36 CFR 1275.46 - Segregation and review; Senior Archival Panel; Presidential Materials Review Board.

    Science.gov (United States)

    2010-07-01

    ...; Senior Archival Panel; Presidential Materials Review Board. 1275.46 Section 1275.46 Parks, Forests, and... Access by the Public § 1275.46 Segregation and review; Senior Archival Panel; Presidential Materials... Senior Archival Panel is unable to make a determination required in paragraph (d) of this section, or...

  17. Building digital archives by the National Diet Library : Toward knowledge sharing

    Science.gov (United States)

    Nakayama, Masaki

    This article shows the current situation of construction of the National Diet Library (NDL)'s digital archive and the direction of activities for “creating and reproducing new knowledge” which “knowledge sharing” aims at. The NDL, as a deposit library has a responsibility to acquire and preserve not only paper materials but also digital contents, and needs to make them accessible anytime and anywhere. The NDL acquires and preserves digital contents to a maximum extent to build the NDL digital archive. However, it is impossible to collect all of them, so the NDL plans to accumulate all knowledge in cooperation with other institutions to build distributed digital archives. The NDL plays a data provider role to navigate all the distributed digital archival information and make it available as semantically-related knowledge to build “NDL Search”. The NDL will make it possible to create new knowledge reusing the existing information as knowledge to build up the knowledge infrastructure.

  18. Software Architecture of the Spitzer Archive Interface

    Science.gov (United States)

    Chavez, J.; Wu, X.; Roby, W.; Hoac, A.; Goldina, T.; Hartley, B.

    2007-10-01

    The Spitzer Science Center (SSC) provides a set of user tools to support search and retrieval of Spitzer Archive (SA) data via the Internet. This presentation describes the software architecture and design principles that support the Archive Interface subsystem of the SA (Handley 2007). The Archive Interface is an extension of the core components of the Uplink subsystem and provides a set web services to allow open access to the SA data set. Web services technology provides a basis for searching the archive and retrieving data products. The archive interface provides three modes of access: a rich client, a Web browser, and scripts (via Web services). The rich client allows the user to perform complex queries and submit requests for data that are asynchronously down-loaded to the local workstation. Asynchronous down-load is a critical feature given the large volume of a typical data set (on the order of 40~GB). For basic queries and retrieval of data the Web browser interface is provided. For advanced users, scripting languages with web services capabilities (i.e. Perl) can used to query and down-load data from the SA. The archive interface subsystem is the primary means for searching and retrieving data from the SA and is critical to the success of the Spitzer Space Telescope.

  19. Open Access e Pubblica Amministrazione

    OpenAIRE

    Galimberti, Paola

    2007-01-01

    The speech tries to analyze how the tools offered by OA, open archives in particolar, can fulfil to the needs of accessibility and publicity of documents of the public administration, with reference to those surveys and those studies (grey literature) that now cannot find a chance for dissemination and remain invisible. Instead documents in open archives are electronics from their origin, especially with associated metadata that assure harvesting, searchability and interoperability.

  20. Making Access to Astronomical Software More Efficient

    CERN Document Server

    Grosbol, P

    2010-01-01

    Access to astronomical data through archives and VO is essential but does not solve all problems. Availability of appropriate software for analyzing the data is often equally important for the efficiency with which a researcher can publish results. A number of legacy systems (e.g. IRAF, MIDAS, Starlink, AIPS, Gipsy), as well as others now coming online are available but have very different user interfaces and may no longer be fully supported. Users may need multiple systems or stand-alone packages to complete the full analysis which introduces significant overhead. The OPTICON Network on `Future Astronomical Software Environments' and the USVAO have discussed these issues and have outlined a general architectural concept that solves many of the current problems in accessing software packages. It foresees a layered structure with clear separation of astronomical code and IT infrastructure. By relying on modern IT concepts for messaging and distributed execution, it provides full scalability from desktops to cl...

  1. AIR PRESSURE and Other Data from UNKNOWN From World-Wide Distribution from 19891201 to 19891231 (NODC Accession 9000008)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The accession contains copy of Salinity Temperature and Depth (STD) data in the (TESAC) format. This contains one month data that was sent as radio messages from...

  2. AIR PRESSURE and Other Data from UNKNOWN From World-Wide Distribution from 19900601 to 19900630 (NODC Accession 9000153)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The accession contains copy of Salinity Temperature and Depth (STD) data in the (TESAC) format. This contains one month data that was sent as radio messages from...

  3. AIR PRESSURE and Other Data from UNKNOWN From World-Wide Distribution from 19900901 to 19900930 (NODC Accession 9000236)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The accession contains copy of Salinity Temperature and Depth (STD) data in the (TESAC) format. This contains one month data that was sent as radio messages from...

  4. AIR PRESSURE and Other Data from UNKNOWN From World-Wide Distribution from 19900101 to 19900131 (NODC Accession 9000052)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The accession contains physical profile data in the TESAC format. This contains one month data that was sent as radio messages from ships to Ocean Products Center...

  5. AIR PRESSURE and Other Data from UNKNOWN From World-Wide Distribution from 19900401 to 19900430 (NODC Accession 9000101)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The accession contains physical profile data in the TESAC format. This contains one month data that was sent as radio messages from ships to Ocean Products Center...

  6. AIR PRESSURE and Other Data from UNKNOWN From World-Wide Distribution from 19900801 to 19900831 (NODC Accession 9000214)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The accession contains copy of Salinity Temperature and Depth (STD) data in the (TESAC) format. This contains one month data that was sent as radio messages from...

  7. AIR PRESSURE and Other Data from UNKNOWN From World-Wide Distribution from 19880701 to 19880731 (NODC Accession 8800227)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The accession contains copy of Salinity Temperature and Depth (STD) data in the (TESAC) format. This contains one month data that was sent as radio messages from...

  8. CURRENT - DIRECTION and Other Data from UNKNOWN From World-Wide Distribution from 19390416 to 19840111 (NODC Accession 8700122)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This accession contains an "Atlas of Selected "Modern" Good Quality Deep Data for the World Oceans (excluding the Arctic). This atlas was compiled by Scripps and...

  9. Conception and data transfer analysis of an open-source digital image archive designed for radiology

    International Nuclear Information System (INIS)

    Purpose: Implementation of a self-designed, web-based digital image archive incorporating the existing DICOM infrastructure to assure distribution of digital pictures and reports and to optimize work flow. Assessment after three years. Materials and methods: Open-source software was used to guarantee highest reliability and cost effectiveness. In view of rapidly increasing capacity and decreasing costs of hard discs (HDs), HDs were preferred over slower and expensive magneto-optical disk (MOD) or tape storage systems. The number of installed servers increased from one to 12. By installing HDs with increased capacities, the number of servers should be kept constant. Entry and access of data were analyzed over two 4-month periods (after 1.5 and 2 years of continuous operations). Results: Our digital image archive was found to be very reliable, cost effective and suitable for its designated tasks. As judged from the measured access volume, the average utilization of the system increased by 160%. In the period from January to April 2002, the users accessed 239.8 gigabyte of the stored 873.7 gigabyte image data (27%). The volume of the stored data added 20%, mainly due to an increase in cross-section imaging. Conclusion: The challenge of developing a digital image archive with limited financial resources resulted in a practicable and expandable solution. The utilization, number of active users and volume of transferred data have increased significantly. Our concept of utilizing HDs for image storage proved to be successful. (orig.)

  10. Automated Analysis of Scenario-based Specifications of Distributed Access Control Policies with Non-Mechanizable Activities (Extended Version)

    OpenAIRE

    Barletta, Michele; Ranise, Silvio; Viganò, Luca

    2012-01-01

    The advance of web services technologies promises to have far-reaching effects on the Internet and enterprise networks allowing for greater accessibility of data. The security challenges presented by the web services approach are formidable. In particular, access control solutions should be revised to address new challenges, such as the need of using certificates for the identification of users and their attributes, human intervention in the creation or selection of the certificates, and (cha...

  11. ESO Archive Operations in support of Services in Garching

    Science.gov (United States)

    Fourniol, Nathalie

    2015-12-01

    ESO Science Archive Facility (SAF) is the unique access point to the La Silla Paranal Observatory (LPO) raw data. It also services data products created at ESO with state-of-the-art pipelines, or fed back by the external astronomical community. ESO SAF is a big success in the sense that users access the data every single day, and they want their data fast! A copy of the ALMA Science Archive (ASA) is also accessible at Garching to the European ALMA community via the European ALMA Regional Center. A data portal allows users to get access to the data. In this poster we present the Archive Operations in support of services in Garching, from archiving the data to making them available to the community.

  12. Technologies for image distribution in hospitals

    International Nuclear Information System (INIS)

    After the establishment of web-based image distribution, three challenges for image distribution can be identified today. Firstly, PACS (picture archiving and communication system) and the distribution of radiological images and reports need to be integrated with the emerging electronic medical record. Secondly, report and image data should be available on mobile devices like PDAs (personal digital assistants) or smartphones in the future. Thirdly, future systems must be available not only to transmit sectional images, but also to allow access to three- and four-dimensional data that are produced by multidetector CT and modern MR scanners. (orig.)

  13. Technologies for image distribution in hospitals

    Energy Technology Data Exchange (ETDEWEB)

    Kotter, Elmar; Baumann, Tobias; Jaeger, Dieter; Langer, Mathias [Universitaetsklinikum Freiburg, Abteilung Roentgendiagnostik, Hugstetterstr. 55, Freiburg (Germany)

    2006-06-15

    After the establishment of web-based image distribution, three challenges for image distribution can be identified today. Firstly, PACS (picture archiving and communication system) and the distribution of radiological images and reports need to be integrated with the emerging electronic medical record. Secondly, report and image data should be available on mobile devices like PDAs (personal digital assistants) or smartphones in the future. Thirdly, future systems must be available not only to transmit sectional images, but also to allow access to three- and four-dimensional data that are produced by multidetector CT and modern MR scanners. (orig.)

  14. ESA Science Archives and associated VO activities

    Science.gov (United States)

    Arviset, Christophe; Baines, Deborah; Barbarisi, Isa; Castellanos, Javier; Cheek, Neil; Costa, Hugo; Fajersztejn, Nicolas; Gonzalez, Juan; Fernandez, Monica; Laruelo, Andrea; Leon, Ignacio; Ortiz, Inaki; Osuna, Pedro; Salgado, Jesus; Tapiador, Daniel

    ESA's European Space Astronomy Centre (ESAC), near Madrid, Spain, hosts most of ESA space based missions' scientific archives, in planetary (Mars Express, Venus Express, Rosetta, Huygens, Giotto, Smart-1, all in ESA Planetary Science Archive), in astronomy (XMM-Newton, Herschel, ISO, Integral, Exosat, Planck) and in solar physics (Soho). All these science archives are operated by a dedicated Science Archives and Virtual Observatory Team (SAT) at ESAC, enabling common and efficient design, development, operations and maintenance of the archives software systems. This also ensures long term preservation and availability of such science archives, as a sustainable service to the science community. ESA space science data can be accessed through powerful and user friendly user interface, as well as from machine scriptable interface and through VO interfaces. Virtual Observatory activities are also fully part of ESA archiving strategy and ESA is a very ac-tive partner in VO initiatives in Europe through Euro-VO AIDA and EuroPlanet and worldwide through the IVOA (International Virtual Observatory Alliance) and the IPDA (International Planetary Data Alliance).

  15. Archival services and technologies for scientific data

    International Nuclear Information System (INIS)

    After analysis and publication, there is no need to keep experimental data online on spinning disks. For reliability and costs inactive data is moved to tape and put into a data archive. The data archive must provide reliable access for at least ten years following a recommendation of the German Science Foundation (DFG), but many scientific communities wish to keep data available much longer. Data archival is on the one hand purely a bit preservation activity in order to ensure the bits read are the same as those written years before. On the other hand enough information must be archived to be able to use and interpret the content of the data. The latter is depending on many also community specific factors and remains an areas of much debate among archival specialists. The paper describes the current practice of archival and bit preservation in use for different science communities at KIT for which a combination of organizational services and technical tools are required. The special monitoring to detect tape related errors, the software infrastructure in use as well as the service certification are discussed. Plans and developments at KIT also in the context of the Large Scale Data Management and Analysis (LSDMA) project are presented. The technical advantages of the T10 SCSI Stream Commands (SSC-4) and the Linear Tape File System (LTFS) will have a profound impact on future long term archival of large data sets.

  16. EPICS data archiver at SSRF beamlines

    International Nuclear Information System (INIS)

    The control system of SSRF (Shanghai Synchrotron Radiation Facility) is based on EPICS (Experimental Physics and Industrial Control System). Operation data storage for synchrotron radiation facility is important for its status monitoring and analysis. At SSRF, operation data used to be index files recorded by traditional EPICS Channel Archiver. Nevertheless, index files are not suitable for long-term maintenance and difficult for data analysis. Now, RDB Channel Archiver and MySQL are used for SSRF beamline operation data archiving, so as to promote the data storage reliability and usability. By applying a new uploading mechanism to RDB Channel Archiver, its writing performance is improved. A web-based GUI (Graphics User Interface) is also developed to make it easier to access database. (authors)

  17. The Dora Lange Archive

    DEFF Research Database (Denmark)

    Holm, Isak Winkel; Bjering, Jens Christian Borrebye

    2016-01-01

    The first season of Nic Pizzolatto's True Detective (2014) is not only a show about a murder, but also a show about how to gather and organize information in an archive. Having identified two archival problems—its temporal and topical extension—the article turns to Jacques Derrida's Archive Fever......: a Freudian Impression in order to explain how the archiving problems of the crime investigation are, in fact, intrinsic to any archiving practice. Lastly, the article addresses the political significance of the show's archiving problems by help of Derrida's text on the American Constitution and of Hardt...

  18. Increasing Self-Archiving of Faculty Publications in Institutional Repositories

    OpenAIRE

    Grundmann, Amanda J.

    2009-01-01

    Despite the increasing interest in institutional repositories by academic institutions and recognition that publisher policies make widespread “green” open access currently achievable, faculty deposits in institutional repositories remain low. Surveys show that faculty support open access initiatives, but may be held back by the perception that self-archiving of their publications creates extra work for them. The solution to this is to make self-archiving in institutional repositories as easy...

  19. Establishing Interoperability of a Blog Archive through Linked Open Data

    DEFF Research Database (Denmark)

    Kalb, Hendrik; Lazaridou, Paraskevi; Trier, Matthias

    The digital cultural heritage is partly preserved through web archiving activities The BlogForever platform is a web archiving platform that aims specifically at the preservation of the blogosphere. The focus enables exploitation of the blog structure for sophisticated access capabilities on...... archived data. However, interoperability among BlogForever archives, as well as with other digital libraries, is necessary in order to avoid silos of data. In this paper, we reveal some of our efforts to establish interoperability through the application of Linked Open data....

  20. Readers’ attitudes to self-archiving in the UK

    OpenAIRE

    Miller, Rhiannon Macfie

    2006-01-01

    The online self-archiving by authors of their scholarly articles has been proposed as an alternative to author-pays open access publication, but has the potential to undermine journal publisher income if the ready availability of self-archived articles leads to a drop in subscriptions. This study investigated the awareness of self-archiving and use of self-archived articles in a survey of a mainly academic population including both authors and non-authors, and looks at their attitudes to self...

  1. Accessible Knowledge - Knowledge on Accessibility

    DEFF Research Database (Denmark)

    Kirkeby, Inge Mette

    2015-01-01

    Although serious efforts are made internationally and nationally, it is a slow process to make our physical environment accessible. In the actual design process, architects play a major role. But what kinds of knowledge, including research-based knowledge, do practicing architects make use of when...... designing accessible environments? The answer to the question is crucially important since it affects how knowledge is distributed and how accessibility can be ensured. In order to get first-hand knowledge about the design process and the sources from which they gain knowledge, 11 qualitative interviews...... were conducted with architects with experience of designing for accessibility. The analysis draws on two theoretical distinctions. The first is research-based knowledge versus knowledge used by architects. The second is context-independent knowledge versus context-dependent knowledge. The practitioners...

  2. Long-term accessibility of e-books: challenges, obstacles, responsibilities

    OpenAIRE

    Maja Krtalić; Damir Hasenay

    2015-01-01

    The traditional life cycle of books has gone through many changes in the digital environment - enough to start questioning the effects of such changes on the process of creating, publishing, distributing, reading and preserving books. This paper focuses on issues concerning the preservation and archiving of published authors’ works in the digital environment for the purpose of their long-term accessibility. The aim of this paper is to give an overview of relevant legal, technical, societal an...

  3. Providing Enhanced Access for the Oregon State University College Catalogs : A Case Study

    OpenAIRE

    Kunda, Susan A.; Nielsen, Elizabeth A.

    2011-01-01

    The academic catalog is a vital record for colleges and universities. Until the late 1980s, Oregon State University catalogs were published, distributed and archived solely in print format. With the advent of web and digital technologies, the Oregon State University Registrar’s Office also began placing an electronic version of the most recent catalogs online, while the Oregon State University Libraries provided access to earlier versions of the catalog through a subscription to College Sourc...

  4. Efficiency of PR communication in establishing links between archives and students: case study of the State Archives in Zadar

    Directory of Open Access Journals (Sweden)

    Goran Pavelin

    2013-03-01

    Full Text Available The aim of the paper is to highlight the changing role of archives and to use the case study to indicate the lacking communication with students due to the absence of PR activities, as well as to point to the difficulties of access to digital archival materials needed for student research. Using PR strategies the archives can sensitise the public for its material through different public programmes, exhibitions and fostering goodmedia relations. The archives try to develop good relations with target groups, in this case with students as potential users, taking into consideration their research needs and materials they are interested in. Research findings on student needs for archival data are extremely rare, even in recent American research. Therefore, we conducted this research using a questionnaire for students of four departments of the University of Zadar (geography, history, art history, tourism and communication, who were users of the State Archives in Zadar. The research results show whether the subjects use archival material, for what purposes, and what other resources they used prior to archival material. It also provides information on the level of familiarity with online archival material and use of web pages with archival resources. We can conclude that the students in Zadar are not well acquainted with the digital resources and use them rarely for their research purposes. The situation can be improved by having the State Archives in Zadar take a more proactive role in identifying target groups of students, their user profiles, difficulties they face, and by allowing a more flexible access to archival material. In addition to goo d relations with the Department of Information Sciences, the Archives should foster links with other departments and include them in planning and implementation of their programmes.

  5. Integration von Open Access Repositorien in Fachportale

    OpenAIRE

    Schaer, Philipp

    2008-01-01

    Open Access Repositorien sind Online Archive für frei im Internet zugängliche Publikationen im Volltext. Open Access Materialien oder die Open Access Repositorien selbst sind allerdings nur unzureichend in zentrale Fachportale (z.B. virtuelle Fachbibliotheken) eingebunden. Der Beitrag stellt SSOAR – Social Science Open Access Repository, einen disziplinären Open Access Volltextserver für die Sozialwissenschaften vor und zeigt wie dieser in das sozialwissenschaftliche Fachportal Sowiport...

  6. The Stratified Economics of Open Access

    OpenAIRE

    John Willinsky

    2009-01-01

    There is a growing recognition within the academic community that ‘open access’ to research and scholarship can increase its value and reach. A variety of open access models have developed over the last twenty years, including author self-archiving, immediate (sponsored) open access, delayed open access, and article-processing-fee open access. Yet the economics of open access is being largely determined, at this point, by the interests of a stratified scholarly publishing market that can be r...

  7. The Internet Archive: An Interview with Brewster Kahle

    Directory of Open Access Journals (Sweden)

    Brewster Kahle

    2015-12-01

    Full Text Available In this interview, founder and director of the 'Internet Archive' Brewster Kahle talks about the cornerstone of modern librarianship: mass digitization. A leading figure in the open access movement, Kahle discusses the creation of the 'Internet Archive' and the challenges facing education today. He reflects on the labour of scanning, the creation of digital content, and explains the economy of digitization that underpins the' Internet Archive'. He considers deaccessioning and the need to start storing not just digital data but physical books. In the context of his 1996 manifesto ‘Archiving the Internet’' '(included here as an appendix, he explores his own trajectory as a digital librarian as he explains the motto of the 'Internet Archive': ‘universal access to all knowledge’.

  8. Archives Library Information Center

    Data.gov (United States)

    National Archives and Records Administration — ALIC is an online library catalog of books, periodicals, and other materials contained in Archives I and II and book collections located in other facilities.

  9. How to Search the Internet Archive Without Indexing It

    DEFF Research Database (Denmark)

    Kanhabua, Nattiya; Kemkes, Philipp; Nejdl, Wolfgang;

    2016-01-01

    Significant parts of our cultural heritage are produced on the Web in recent years. While the easy accessibility to the current Web is a good baseline, optimal access to the past of the Web faces several challenges. This includes dealing with large-scale web archive collections, as well as lacking...... search results to the WayBack Machine; thus al- lowing keyword search on the Internet Archive without processing and indexing its raw content. Our system complements existing web archive search tools through a user interface, which comes close to the functionalities of modern web search engines (e...

  10. The Cancer Digital Slide Archive - TCGA

    Science.gov (United States)

    Dr. David Gutman and Dr. Lee Cooper developed The Cancer Digital Slide Archive (CDSA), a web platform for accessing pathology slide images of TCGA samples. Find out how they did it and how to use the CDSA website in this Case Study.

  11. Picture archiving and communication in radiology.

    Science.gov (United States)

    Napoli, Marzia; Nanni, Marinella; Cimarra, Stefania; Crisafulli, Letizia; Campioni, Paolo; Marano, Pasquale

    2003-01-01

    After over 80 years of exclusive archiving of radiologic films, at present, in Radiology, digital archiving is increasingly gaining ground. Digital archiving allows a considerable reduction in costs and space saving, but most importantly, immediate or remote consultation of all examinations and reports in the hospital clinical wards, is feasible. The RIS system, in this case, is the starting point of the process of electronic archiving which however is the task of PACS. The latter can be used as radiologic archive in accordance with the law provided that it is in conformance with some specifications as the use of optical long-term storage media or with electronic track of change. PACS archives, in a hierarchical system, all digital images produced by each diagnostic imaging modality. Images and patient data can be retrieved and used for consultation or remote consultation by the reporting radiologist who requires images and reports of previous radiologic examinations or by the referring physician of the ward. Modern PACS owing to the WEB server allow remote access to extremely simplified images and data however ensuring the due regulations and access protections. Since the PACS enables a simpler data communication within the hospital, security and patient privacy should be protected. A secure and reliable PACS should be able to minimize the risk of accidental data destruction, and should prevent non authorized access to the archive with adequate security measures in relation to the acquired knowledge and based on the technological advances. Archiving of data produced by modern digital imaging is a problem now present also in small Radiology services. The technology is able to readily solve problems which were extremely complex up to some years ago as the connection between equipment and archiving system owing also to the universalization of the DICOM 3.0 standard. The evolution of communication networks and the use of standard protocols as TCP/IP can minimize

  12. Digitization of the Arcetri Solar Photographic Archive

    Science.gov (United States)

    Marchei, E.; Ermolli, I.; Centrone, M.; Giorgi, F.; Perna, C.

    The solar tower of the Arcetri Astrophysical Observatory produced synoptic observations of the solar atmosphere from 1925 to 1974. The photographic archive contains about 13000 plates of full-disk Ca II K and H_alpha spectroheliograms acquired during about 5000 observing days. The program to digitize and distribute the images of this archive started at the Rome Astronomical Observatory by CVS (Centre for Study the Variability of the Sun) on 2004 and is now complete. We hereby summarize the digitization work.

  13. Distribution of maternity units and spatial access to specialised care for women delivering before 32 weeks of gestation in Europe

    DEFF Research Database (Denmark)

    Pilkington, Hugo; Blondel, Béatrice; Papiernik, Emile;

    2009-01-01

    European regions with diverse perinatal health systems (the MOSAIC cohort). We analysed distances between women's homes, and the nearest level III in population quartiles, adjusting for maternal and pregnancy characteristics. Living farther away from a level III reduced access to specialised care...

  14. My Dream Archive

    Science.gov (United States)

    Phelps, Christopher

    2007-01-01

    In this article, the author shares his experience as he traveled from island to island with a single objective--to reach the archives. He found out that not all archives are the same. In recent months, his daydreaming in various facilities has yielded a recurrent question on what would constitute the Ideal Archive. What follows, in no particular…

  15. Calorimeter Process Variable Archiving

    Energy Technology Data Exchange (ETDEWEB)

    Huffman, David; /Fermilab

    2002-01-14

    These steps were taken to maintain weekly archives: (1) Friday morning you stop the archiver and wait for it to finish writing data (the lock file will be removed from the directory); (2) move the current archive information to a PC via FTP; (3) remove all previous archive information in the previous directory; (4) move the current archive into the previous directory; (5) start a new archive; (6) burn a CDROM of the archive; and (7) copy the current archive to a specific directory. There are 2 ways to check if the Calorimeter Archiver is running, either through the WEB based front end or directly from a command line. Once the archiver is running it can be monitored from a WEB page. This only works with a browser launched from the online machine running the archiver. Each time the browser is reloaded there should be an update reported in the last write check field. You might have to wait a few minutes to see the update. Calorimetry currently takes readings every (300 sec.) 5 minutes. The second method to verify the archiver is running is to issue a command from a Linux cluster machine.

  16. The PSA: Planetary Science Archive

    Science.gov (United States)

    Barthelemy, M.; Martinez, S.; Heather, D.; Vazquez, J. L.; Arviset, C.; Osuna, P.; PSA development Team

    2012-04-01

    Scientific and engineering data from ESA's planetary missions are made accessible to the world-wide scientific community via the Planetary Science Archive (PSA). The PSA consists of online services incorporating search, preview, download, notification and delivery basket functionality. Besides data from the GIOTTO spacecraft and several ground-based cometary observations, the PSA contains data from the Mars Express, Venus Express, Rosetta, SMART-1 and Huygens missions. The focus of the PSA activities is on the long-term preservation of data and knowledge from ESA's planetary missions. Scientific users can access the data online using several interfaces: - The Advanced Search Interface allows complex parameter based queries, providing the end user with a facility to complete very specific searches on meta-data and geometrical parameters. By nature, this interface requires careful use and heavy interaction with the end-user to input and control the relevant search parameters. - The Map-based Interface is currently operational only for Mars Express HRCS and OMEGA data. This interface allows an end-user to specify a region-of-interest by dragging a box onto a base map of Mars. From this interface, it is possible to directly visualize query results. The Map-based and Advanced interfaces are linked and cross-compatible. If a user defines a region-of-interest in the Map-based interface, the results can be refined by entering more detailed search parameters in the Advanced interface. - The FTP Browser Interface is designed for more experienced users, and allows for direct browsing and access of the data set content through ftp-tree search. Each dataset contains documentation and calibration information in addition to the scientific or engineering data. All data are prepared by the corresponding instrument teams, mostly located in Europe. PSA supports the instrument teams in the full archiving process, from the definition of the data products, meta-data and product labels

  17. Iterative Fusion of Distributed Decisions over the Gaussian Multiple-Access Channel Using Concatenated BCH-LDGM Codes

    OpenAIRE

    Crespo PedroM; Garcia-Frias Javier; Del Ser Javier; Manjarres Diana; Gil-Lopez Sergio

    2011-01-01

    This paper focuses on the data fusion scenario where nodes sense and transmit the data generated by a source to a common destination, which estimates the original information from more accurately than in the case of a single sensor. This work joins the upsurge of research interest in this topic by addressing the setup where the sensed information is transmitted over a Gaussian Multiple-Access Channel (MAC). We use Low Density Generator Matrix (LDGM) codes in order to keep the correlati...

  18. NASA participation in the 1980 PEPE/NEROS project: Data archive

    Science.gov (United States)

    Brewer, D. A.; Remsberg, E. E.; Loar, G. R.; Bendura, R. J.

    1982-01-01

    Eight experimental air quality measurement systems were investigated during July and August 1980 as part of the EPA PEPE/NEROS fiel measurement program. Data from those efforts have been entered into an archive that may be accessed by other researchers. The data sets consists of airborne measurements of regional mixed layer heights and aerosol and ozone distributions as well as point measurements of meteorological parameters and ozone obtained during diurnal transitions in the planetary boundary layer. This report gives a discussion of each measurement system, a preliminary assessment of data quality, a description of the archive format for each data set, and a summary of several proposed scientific studies which will utilize these data.

  19. The digitized archive of the Arcetri spectroheliograms. Preliminary results from the analysis of Ca II K images

    Science.gov (United States)

    Ermolli, I.; Marchei, E.; Centrone, M.; Criscuoli, S.; Giorgi, F.; Perna, C.

    2009-05-01

    Context: The increasing interest in the recovery of historic data and the availability of new hardware resources is leading to projects to digitize photographic archives of astronomical observations. In addition to preservation, solar archives are digitized because the observations stored in such archives have the potential of providing unique information about solar magnetism, which can improve knowledge about long-term solar changes. Aims: The solar tower of the Arcetri Astrophysical Observatory produced synoptic observations of the solar atmosphere from 1926 to 1974. The photographic archive contains about 13 000 plates of full-disk Ca II K and Hα spectroheliograms acquired during about 5000 observing days. The program for the digitization and distribution of the images of this archive was carried out at the Rome Astronomical Observatory and is now complete. Methods: Nearly 13 000 plates were scanned with a commercial device and stored on DVD, as well as in a database accessible online. Image processing was developed for the reduction of the data and their photographic calibration. Results: The obtained digital archive provides the astronomical community with the Arcetri historical solar observations and with measurements of solar features identified in such observations. As an example, we show some preliminary results concerning the temporal variability of facular regions identified in the time-series of Ca II K observations. Conclusions: Existing programs studying solar activity and variability, as well as new scientific projects, will benefit from the Arcetri digital archive, since it extends the temporal baseline of digital full-disk solar observations, and it provides data for the inter-calibration of results obtained from measurements performed in similar observations.

  20. Open-Access-Suchmaschinen

    OpenAIRE

    Nicolai, Thomas

    2009-01-01

    Open Access ist eine von Wissenschaftlern für Wissenschaftler gegründete Bewegung mit dem Interesse, einen kostenlosen und uneingeschränkten Zugang zu wissenschaftli-chen Forschungsbeiträgen über das Internet zu ermöglichen. Im Zuge dieser Entwicklung stellen Forschungsinstitutionen ihren Wissenschaftlern kostenlos Open-Access-Archive zur freien Veröffentlichung ihrer Forschungsbeiträge zur Verfügung. Dies hat in den vergangenen Jahren zu mehreren Millionen frei verfügbaren wissenschaftlichen...

  1. Active preservation - otherwise no archives

    Energy Technology Data Exchange (ETDEWEB)

    Norberg, E. [National Swedish Archives, Stockholm (Sweden)

    1996-12-01

    The role and history of national and regional archives in Sweden is discussed. It is noted that large portions of our cultural heritage can not be set aside for long-term preservation due to several facts: Some events are never documented, Important records are never set aside, Important information is stored on media that are not suitable for long-term preservation, Information can not be accessed due to inadequate search aids, Eliminations are made due to lack of space. Strategies for an action plan to save valuable material are briefly outlined, and the importance of international cooperation is stressed.

  2. Picture archival and communication systems

    International Nuclear Information System (INIS)

    Providing high quality care through an efficient delivery system is the aim of every health care organization. With the phenomenal rise of computer technology in recent times, it has become possible to store and communicate medical images in digital format. PACS systems are generally based on a dedicated computer, which can access data stored in the digital image processors of different imaging modalities and transfer this data at high speeds to remote viewing consoles, to archival storage media and to other computer systems either within the hospital or at remote locations

  3. Active preservation - otherwise no archives

    International Nuclear Information System (INIS)

    The role and history of national and regional archives in Sweden is discussed. It is noted that large portions of our cultural heritage can not be set aside for long-term preservation due to several facts: Some events are never documented, Important records are never set aside, Important information is stored on media that are not suitable for long-term preservation, Information can not be accessed due to inadequate search aids, Eliminations are made due to lack of space. Strategies for an action plan to save valuable material are briefly outlined, and the importance of international cooperation is stressed

  4. An Intelligent Archive Testbed Incorporating Data Mining

    Science.gov (United States)

    Ramapriyan, H.; Isaac, D.; Yang, W.; Bonnlander, B.; Danks, D.

    2009-01-01

    Many significant advances have occurred during the last two decades in remote sensing instrumentation, computation, storage, and communication technology. A series of Earth observing satellites have been launched by U.S. and international agencies and have been operating and collecting global data on a regular basis. These advances have created a data rich environment for scientific research and applications. NASA s Earth Observing System (EOS) Data and Information System (EOSDIS) has been operational since August 1994 with support for pre-EOS data. Currently, EOSDIS supports all the EOS missions including Terra (1999), Aqua (2002), ICESat (2002) and Aura (2004). EOSDIS has been effectively capturing, processing and archiving several terabytes of standard data products each day. It has also been distributing these data products at a rate of several terabytes per day to a diverse and globally distributed user community (Ramapriyan et al. 2009). There are other NASA-sponsored data system activities including measurement-based systems such as the Ocean Data Processing System and the Precipitation Processing system, and several projects under the Research, Education and Applications Solutions Network (REASoN), Making Earth Science Data Records for Use in Research Environments (MEaSUREs), and the Advancing Collaborative Connections for Earth-Sun System Science (ACCESS) programs. Together, these activities provide a rich set of resources constituting a value chain for users to obtain data at various levels ranging from raw radiances to interdisciplinary model outputs. The result has been a significant leap in our understanding of the Earth systems that all humans depend on for their enjoyment, livelihood, and survival. The trend in the community today is towards many distributed sets of providers of data and services. Despite this, visions for the future include users being able to locate, fuse and utilize data with location transparency and high degree of

  5. Introduction: Consider the Archive.

    Science.gov (United States)

    Yale, Elizabeth

    2016-03-01

    In recent years, historians of archives have paid increasingly careful attention to the development of state, colonial, religious, and corporate archives in the early modern period, arguing that power (of various kinds) was mediated and extended through material writing practices in and around archives. The history of early modern science, likewise, has tracked the production of scientific knowledge through the inscription and circulation of written records within and between laboratories, libraries, homes, and public spaces, such as coffeehouses and bookshops. This Focus section interrogates these two bodies of scholarship against each other. The contributors ask how archival digitization is transforming historical practice; how awareness of archival histories can help us to reconceptualize our work as historians of science; how an archive's layered purposes, built up over centuries of record keeping, can shape the historical narratives we write; and how scientific knowledge emerging from archives gained authority and authenticity. PMID:27197412

  6. INOVASI MEDIA PEMBELAJARAN KEARSIPAN ELECTRONIK ARSIP (E-ARSIP BERBASIS MICROSOFT OFFICE ACCESS

    Directory of Open Access Journals (Sweden)

    Ahmad Saeroji

    2016-01-01

    Full Text Available Microsoft Office Access (Ms Access is a database management system which is a Relational Database Management System. The database in Microsoft Access is a set of objects consisting of tables, queries, forms, reports. Archival system is basically to store useful various files for organizations with the specific rules so the files can be found quickly and easily. Therefore; Microsoft Office Access is an appropriate breakthrough to build archival application systems based on Microsoft Office Access. It is not only easy to be operated but also available a package of Microsoft Office program. One of the most important benefits of the database is to facilitate the access to the data. The ease of accessing the data is the implication of the order data since it is the prerequisite of a good database. The database of archiving system is an application or system design which allows the archives storage digitally. The objective of the e-archives application program using Microsoft Access is to facilitate the delivery of material practices of electronic filing (e-archives. The purposes of the scientific study are: (1 to determine the basic concept and scope of Electronic archives (e-archives, (2 To know how to use the media of electronic archives (E-archives aided Microsoft Office Access in the learning activities for Vocational students of Office Administration program.

  7. NODC Standard Product: International ocean atlas Volume 4 - Atlas of temperature / salinity frequency distributions (2 disc set) (NODC Accession 0101473)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This Atlas presents more than 80,000 plots of the empirical frequency distributions of temperature and salinity for each 5-degree square area of the North Atlantic...

  8. Commercial imagery archive product development

    Science.gov (United States)

    Sakkas, Alysa

    1999-12-01

    The Lockheed Martin (LM) team had garnered over a decade of operational experience in digital imagery management and analysis for the US Government at numerous worldwide sites. Recently, it set out to create a new commercial product to serve the needs of large-scale imagery archiving and analysis markets worldwide. LM decided to provide a turnkey commercial solution to receive, store, retrieve, process, analyze and disseminate in 'push' or 'pull' modes components and adapted and developed its own algorithms to provide added functionality not commercially available elsewhere. The resultant product, Intelligent Library System, satisfies requirements for (a) a potentially unbounded, data archive automated workflow management for increased user productivity; (c) automatic tracking and management of files stored on shelves; (d) ability to ingest, process and disseminate data involves with bandwidths ranging up to multi-gigabit per second; (e) access through a thin client- to-server network environment; (f) multiple interactive users needing retrieval of filters in seconds from both archived images or in real time, and (g) scalability that maintains information throughput performance as the size of the digital library grows.

  9. Arrangement and Description of the CERN Archive

    CERN Document Server

    Hollier, Anita

    2005-01-01

    This paper describes recent work on the arrangement and description of the CERN Archive. In order to improve access a shelf list was created and then adapted to become a Guide for public use. A functional arrangement was chosen for the Guide, in the hope that this would accommodate ongoing reorganisations and would grow with CERN. A re-evaluation of this approach was carried out 18 months later, and produced several improvements. It also raised a number of questions concerning the theoretical basis for some of the decisions taken about archival arrangement, and suggested ideas for future directions.

  10. Digitising the Turing Archive: A Pilot Study

    OpenAIRE

    Hall, W.; Hughes, G.V.; Martinez, K.; Weal, M.J.; Wills, G.B.

    2000-01-01

    This report presents a summary of the pilot project to produce an on-line version of a selected portion of the archive of Alan Turing held at King’s College, Cambridge. The design and creation of a database making use of information held in the archive catalogue is discussed. The production of a Web based interface to access the on-line materials is described. The practical issues involved in digitising documents are covered and the lessons learnt from this process are included. Finally, the ...

  11. Self-organized construction of distributed access structures: A comparative evaluation of P-Grid and FreeNet

    OpenAIRE

    Aberer, Karl; HAUSWIRTH, Manfred; Punceva, Magdalena

    2003-01-01

    This paper provides a quantative comparison of the efficiency of the self-organized construction processes of the P-Grid and FreeNet peer-to-peer systems. Starting from a defined, realistic network topology we simulate the construction of their access structures and measure the incurred message load and memory usage for routing tables. Besides these results our experimental setup may also be used as a starting point for defining a standard test and evaluation suite for P2P systems.

  12. A distributed Approach for Access and Visibility Task under Ergonomic Constraints with a Manikin in a Virtual Reality Environment

    CERN Document Server

    Bidault, Florence; Chedmail, Patrick; Pino, Laurent

    2007-01-01

    This paper presents a new method, based on a multi-agent system and on digital mock-up technology, to assess an efficient path planner for a manikin for access and visibility task under ergonomic constraints. In order to solve this problem, the human operator is integrated in the process optimization to contribute to a global perception of the environment. This operator cooperates, in real-time, with several automatic local elementary agents. The result of this work validates solutions brought by digital mock-up and that can be applied to simulate maintenance task.

  13. A distributed Approach for Access and Visibility Task with a Manikin and a Robot in a Virtual Reality Environment

    CERN Document Server

    Chedmail, Patrick; Roy, Christophe Le

    2011-01-01

    This paper presents a new method, based on a multi-agent system and on a digital mock-up technology, to assess an efficient path planner for a manikin or a robot for access and visibility task taking into account ergonomic constraints or joint and mechanical limits. In order to solve this problem, the human operator is integrated in the process optimization to contribute to a global perception of the environment. This operator cooperates, in real-time, with several automatic local elementary agents. The result of this work validates solutions through the digital mock-up; it can be applied to simulate maintenability and mountability tasks.

  14. The open access and the natural gas ducts: transport and distribution; O livre acesso e os dutos de gas natural: transporte e distribuicao

    Energy Technology Data Exchange (ETDEWEB)

    Siqueira, Mariana de; Xavier, Yanko Marcius de Alencar [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil)

    2008-07-01

    The present research, attempting for the economic relevance of the natural gas sector, for the lack of a law that disciplines it and, still, for the structural question of the natural gas ducts activities; it analyzes, in a comparative way, the monopoly of the natural gas ducts activities and the mechanisms of competition chosen to brighten up it: the open access and the by pas. The transport and the distribution of the natural gas are really similar, but the ways to insert the competition in its areas are not. (author)

  15. Deploying user-developed scientific analyses on federated data archives

    Science.gov (United States)

    Balaji, V.; Ansari, S.; Radhakrishnan, A.

    2011-12-01

    conventions and standards: the CMIP5 specifies a common standard for locating datasets themselves (the Document Reference Syntax) and for variables and hyperslabs within the datasets (using Climate and Forecast conventions) - based upon the above we have developed a query syntax that will request input datasets based on DRS and CF keywords. The query is then formulated as arguments to the user-developed analysis script. - There are very few restrictions on the analysis scripts other than following the conventions for arguments. Internally they are free to write the analysis algorithm in any language (though there are certain preferred analysis packages already deployable on ESGF nodes, such as CDAT, Ferret and Grads). - In its simplest form, the analysis is directly executed on the server itself; for more resource-intensive applications, it can be directed to a cloud behind appropriate access control and resource allocation layers. We demonstrate this technology by showcasing different analysis scripts of varying levels of complexity operating on CMIP5 datasets. This work was performed under the auspices of the ExArch Project, an international consortium developing distributed analytics for exascale archives.

  16. Evaluation of in-plane local stress distribution in stacked IC chip using dynamic random access memory cell array for highly reliable three-dimensional IC

    Science.gov (United States)

    Tanikawa, Seiya; Kino, Hisashi; Fukushima, Takafumi; Koyanagi, Mitsumasa; Tanaka, Tetsu

    2016-04-01

    As three-dimensional (3D) ICs have many advantages, IC performances can be enhanced without scaling down of transistor size. However, 3D IC has mechanical stresses inside Si substrates owing to its 3D stacking structure, which induces negative effects on transistor performances such as carrier mobility changes. One of the mechanical stresses is local bending stress due to organic adhesive shrinkage among stacked IC chips. In this paper, we have proposed an evaluation method for in-plane local stress distribution in the stacked IC chips using retention time modulation of a dynamic random access memory (DRAM) cell array. We fabricated a test structure composed of a DRAM chip bonded on a Si interposer with dummy Cu/Sn microbumps. As a result, we clarified that the DRAM cell array can precisely evaluate the in-plane local stress distribution in the stacked IC chips.

  17. ESO Archive Operations in support of Services in Garching

    OpenAIRE

    Fourniol, Nathalie

    2015-01-01

    ESO Science Archive Facility (SAF) is the unique access point to the La Silla Paranal Observatory (LPO) raw data. It also services data products created at ESO with state-of-the-art pipelines, or fed back by the external astronomical community. ESO SAF is a big success in the sense that users access the data every single day, and they want their data fast! A copy of the ALMA Science Archive (ASA) is also accessible at Garching to the European ALMA community via the European ALMA Regional ...

  18. The Planck Legacy Archive

    Science.gov (United States)

    Dupac, X.; Arviset, C.; Fernandez Barreiro, M.; Lopez-Caniego, M.; Tauber, J.

    2015-12-01

    The Planck Collaboration has released in 2015 their second major dataset through the Planck Legacy Archive (PLA). It includes cosmological, Extragalactic and Galactic science data in temperature (intensity) and polarization. Full-sky maps are provided with unprecedented angular resolution and sensitivity, together with a large number of ancillary maps, catalogues (generic, SZ clusters and Galactic cold clumps), time-ordered data and other information. The extensive cosmological likelihood package allows cosmologists to fully explore the plausible parameters of the Universe. A new web-based PLA user interface is made public since Dec. 2014, allowing easier and faster access to all Planck data, and replacing the previous Java-based software. Numerous additional improvements to the PLA are also being developed through the so-called PLA Added-Value Interface, making use of an external contract with the Planetek Hellas and Expert Analytics software companies. This will allow users to process time-ordered data into sky maps, separate astrophysical components in existing maps, simulate the microwave and infrared sky through the Planck Sky Model, and use a number of other functionalities.

  19. Scientific Archives in the Age of Digitization.

    Science.gov (United States)

    Ogilvie, Brian

    2016-03-01

    Historians are increasingly working with material that is not only digital but has been digitized. Early digitization projects aimed to encode data for systematic analysis; more recent projects have sought to reproduce unique archival material in a manner that allows for open-ended historical inquiry without the need to travel to archives and manipulate physical objects. Such projects have undeniable benefits for the preservation of documents and access to them. Yet historians must be aware of the scope of digitization, the reasons why material is chosen to be digitized, and limitations on the dissemination of digitized sources. Furthermore, some physical aspects of sources, and of collections of sources, are lost in their digital simulacra. Nonetheless, digitization and the standardization of metadata offer significant possibilities for future archival research and documentation. PMID:27197413

  20. Sandia Data Archive (SDA) file specifications.

    Energy Technology Data Exchange (ETDEWEB)

    Dolan, Daniel H.,; Ao, Tommy

    2015-02-01

    The Sandia Data Archive (SDA) format is a specific implementation of the HDF5 (Hierarchal Data Format version 5) standard. The format was developed for storing data in a universally accessible manner. SDA files may contain one or more data records, each associated with a distinct text label. Primitive records provide basic data storage, while compound records support more elaborate grouping. External records allow text/binary files to be carried inside an archive and later recovered. This report documents version 1.0 of the SDA standard. The information provided here is sufficient for reading from and writing to an archive. Although the format was original designed for use in MATLAB, broader use is encouraged.

  1. Applied Archival Downloading with Wget

    Directory of Open Access Journals (Sweden)

    Kellen Kurschinski

    2013-09-01

    Full Text Available Archival websites offer a wealth of resources to historians, but increased accessibility does not always translate into increased utility. In other words, while online collections often allow historians to access hitherto unavailable or cost-prohibitive materials, they can also be limited by the manner in which content is presented and organized. Take for example the Indian Affairs Annual Reports database hosted on the Library and Archives Canada [LAC] website. Say you wanted to download an entire report, or reports for several decades. The current system allows a user the option to read a plaintext version of each page, or click on the “View a scanned page of original Report” link, which will take the user to a page with LAC’s embedded image viewer. This allows you to see the original document, but it is also cumbersome because it requires you to scroll through each individual page. Moreover, if you want the document for offline viewing, the only option is to right click –> save as each image to a directory on your computer. If you want several decades’ worth of annual reports, you can see the limits to the current means of presentation pretty easily. This lesson will allow you to overcome such an obstacle.

  2. The Role of Planetary Data System Archive Standards in International Planetary Data Archives

    Science.gov (United States)

    Guinness, Edward; Slavney, Susan; Beebe, Reta; Crichton, Daniel

    A major objective of NASA's Planetary Data System (PDS) is to efficiently archive and make accessible digital data produced by NASA's planetary missions, research programs, and data analysis programs. The PDS is comprised of a federation of groups known as nodes, with each node focused on archiving and managing planetary data from a given science discipline. PDS nodes include Atmospheres, Geosciences, Small Bodies (asteroids, comets, and dust), Rings, Planetary Plasma Interactions, and Imaging. There are also support nodes for engineering, radio science, and ancillary data, such as geometry information. The PDS archives include space-borne, ground-based, and laboratory experiment data from several decades of NASA exploration of comets, asteroids, moons, and planets. PDS archives are peer-reviewed, welldocumented, and accessible online via web sites, catalogs, and other user-interfaces that provide search and retrieval capabilities. Current holdings within the PDS online repositories total approximately 50 TB of data. Over the next few years, the PDS is planning for a rapid expansion in the volume of data being delivered to its archives. The archive standards developed by the PDS are crucial elements for producing planetary data archives that are consistent across missions and planetary science disciplines and that yield archives that are useable by the planetary research community. These standards encompass the full range of archiving needs. They include standards for the format of data products and the metadata needed to detail how observations were made. They also specify how data products and ancillary information such as documentation, calibration, and geometric information are packaged into data sets. The PDS standards are documented in its Planetary Science Data Dictionary and in its Standards Reference Document and Archive Preparation Guide. The PDS standards are being used to design and implement data archives for current and future NASA planetary missions

  3. Assuring access to topical mosquito repellents within an intensive distribution scheme: a case study in a remote province of Cambodia

    OpenAIRE

    Heng, Somony; Durnez, Lies; Gryseels, Charlotte; Van Roey, Karel; Mean, Vanna; Uk, Sambunny; Siv, Sovannaroth; Grietens, Koen Peeters; Sochantha, Tho; COOSEMANS Marc; Sluydts, Vincent

    2015-01-01

    Background The public health value of a vector control tool depends on its epidemiological efficacy, but also on its ease of implementation. This study describes an intensive distribution scheme of a topical repellent implemented in 2012 and 2013 for the purpose of a cluster-randomized trial using the existing public health system. The trial aimed to assess the effectiveness of repellents in addition to long-lasting insecticidal nets (LLIN) and occurred in a province of Cambodia. Determinants...

  4. Assuring access to topical mosquito repellents within an intensive distribution scheme: a case study in a remote province of Cambodia

    OpenAIRE

    Heng, Somony; Durnez, Lies; Gryseels, Charlotte; Van Roey, Karel; Mean, Vanna; Uk, Sambunny; Siv, Sovannaroth; Peeters Grietens, Koen; Sochantha, Tho; COOSEMANS Marc; Sluydts, Vincent

    2015-01-01

    Background The public health value of a vector control tool depends on its epidemiological efficacy, but also on its ease of implementation. This study describes an intensive distribution scheme of a topical repellent implemented in 2012 and 2013 for the purpose of a cluster-randomized trial using the existing public health system. The trial aimed to assess the effectiveness of repellents in addition to long-lasting insecticidal nets (LLIN) and occurred in a province of Cambodia. Determina...

  5. Nearline Web Archiving

    OpenAIRE

    Xie, Zhiwu; Nayyar, Krati; Fox, Edward A

    2016-01-01

    In this paper, we propose a modified approach to real­time transactional web archiving. It leverages the web caching infrastructure that is already prevalent on web servers. Instead of archiving web content at HTTP transaction time, in our approach the archiving happens when the cached copy expires and is about to be expunged. Before the deletion, all expired cache copies are combined and then sent to the web archive in small batches. Since the cache is purged at much lower frequency than HTT...

  6. Inventing the Archive

    DEFF Research Database (Denmark)

    Eskildsen, Kasper Risbjerg

    2013-01-01

    This article investigates the emergence of the archive as the primary venue for the production of historical knowledge in the 19th century. The turn to archival research, the article argues, may be considered as a response to the discussions about the problems of testimony that dominated 18th......- and early 19th-century German writings on the methodology and epistemology of historical research. These discussions, especially regarding the epistemic virtues of witnesses, also helped create the particular culture of knowledge-making within German historical scholarship that enabled the archival turn...... of the 19th-century archival turn....

  7. Archival bone marrow samples

    DEFF Research Database (Denmark)

    Lund, Bendik; Najmi, Laeya A; Wesolowska-Andersen, Agata;

    2015-01-01

    AB Archival samples represent a significant potential for genetic studies, particularly in severe diseases with risk of lethal outcome, such as in cancer. In this pilot study, we aimed to evaluate the usability of archival bone marrow smears and biopsies for DNA extraction and purification, whole...... with samples stored for 4 to 10 years. Acceptable call rates for SNPs were detected for 7 of 42 archival samples. In conclusion, archival bone marrow samples are suitable for DNA extraction and multiple marker analysis, but WGA was less successful, especially when longer fragments were analyzed. Multiple SNP...

  8. Meteorological Archival Facility

    Data.gov (United States)

    Federal Laboratory Consortium — FUNCTION: The Bergen Data Center (BDC) provides data archival capability for meteorological and oceanographic data. DESCRIPTION: The BDC operates as a resource for...

  9. Introducing the PRIDE Archive RESTful web services.

    Science.gov (United States)

    Reisinger, Florian; del-Toro, Noemi; Ternent, Tobias; Hermjakob, Henning; Vizcaíno, Juan Antonio

    2015-07-01

    The PRIDE (PRoteomics IDEntifications) database is one of the world-leading public repositories of mass spectrometry (MS)-based proteomics data and it is a founding member of the ProteomeXchange Consortium of proteomics resources. In the original PRIDE database system, users could access data programmatically by accessing the web services provided by the PRIDE BioMart interface. New REST (REpresentational State Transfer) web services have been developed to serve the most popular functionality provided by BioMart (now discontinued due to data scalability issues) and address the data access requirements of the newly developed PRIDE Archive. Using the API (Application Programming Interface) it is now possible to programmatically query for and retrieve peptide and protein identifications, project and assay metadata and the originally submitted files. Searching and filtering is also possible by metadata information, such as sample details (e.g. species and tissues), instrumentation (mass spectrometer), keywords and other provided annotations. The PRIDE Archive web services were first made available in April 2014. The API has already been adopted by a few applications and standalone tools such as PeptideShaker, PRIDE Inspector, the Unipept web application and the Python-based BioServices package. This application is free and open to all users with no login requirement and can be accessed at http://www.ebi.ac.uk/pride/ws/archive/. PMID:25904633

  10. Creating an Online Television Archive, 1987–2013

    Directory of Open Access Journals (Sweden)

    Robert Browning

    2014-07-01

    Full Text Available The growth of television, and in particular television news, has created a challenge in preserving and providing access to the resulting material. At the same time, technology has opened many opportunities to capture this information and make it more widely available. In some ways, it is a race of technology against the speed of content creation. In this paper, we describe a very successful archival project that records, indexes, archives and makes available the totality of the programming of the U.S. based C-SPAN television network, a nonprofit network that telecasts the entirety of the U.S. congressional proceedings, hearings, presidential speeches and other public policy events. As such, it is an archive of unedited primary source events. The use of evolving technology over 25 years has made this archive possible and it exists free on the Internet for world-wide access.

  11. Iterative Fusion of Distributed Decisions over the Gaussian Multiple-Access Channel Using Concatenated BCH-LDGM Codes

    Directory of Open Access Journals (Sweden)

    Crespo PedroM

    2011-01-01

    Full Text Available This paper focuses on the data fusion scenario where nodes sense and transmit the data generated by a source to a common destination, which estimates the original information from more accurately than in the case of a single sensor. This work joins the upsurge of research interest in this topic by addressing the setup where the sensed information is transmitted over a Gaussian Multiple-Access Channel (MAC. We use Low Density Generator Matrix (LDGM codes in order to keep the correlation between the transmitted codewords, which leads to an improved received Signal-to-Noise Ratio (SNR thanks to the constructive signal addition at the receiver front-end. At reception, we propose a joint decoder and estimator that exchanges soft information between the LDGM decoders and a data fusion stage. An error-correcting Bose, Ray-Chaudhuri, Hocquenghem (BCH code is further applied suppress the error floor derived from the ambiguity of the MAC channel when dealing with correlated sources. Simulation results are presented for several values of and diverse LDGM and BCH codes, based on which we conclude that the proposed scheme outperforms significantly (by up to 6.3 dB the suboptimum limit assuming separation between Slepian-Wolf source coding and capacity-achieving channel coding.

  12. Challenges for Data Archival Centers in Evolving Environmental Sciences

    Science.gov (United States)

    Wei, Y.; Cook, R. B.; Gu, L.; Santhana Vannan, S. K.; Beaty, T.

    2015-12-01

    Environmental science has entered into a big data era as enormous data about the Earth environment are continuously collected through field and airborne missions, remote sensing observations, model simulations, sensor networks, etc. An open-access and open-management data infrastructure for data-intensive science is a major grand challenge in global environmental research (BERAC, 2010). Such an infrastructure, as exemplified in EOSDIS, GEOSS, and NSF EarthCube, will provide a complete lifecycle of environmental data and ensures that data will smoothly flow among different phases of collection, preservation, integration, and analysis. Data archival centers, as the data integration units closest to data providers, serve as the source power to compile and integrate heterogeneous environmental data into this global infrastructure. This presentation discusses the interoperability challenges and practices of geosciences from the aspect of data archival centers, based on the operational experiences of the NASA-sponsored Oak Ridge National Laboratory Distributed Active Archive Center (ORNL DAAC) and related environmental data management activities. Specifically, we will discuss the challenges to 1) encourage and help scientists to more actively share data with the broader scientific community, so that valuable environmental data, especially those dark data collected by individual scientists in small independent projects, can be shared and integrated into the infrastructure to tackle big science questions; 2) curate heterogeneous multi-disciplinary data, focusing on the key aspects of identification, format, metadata, data quality, and semantics to make them ready to be plugged into a global data infrastructure. We will highlight data curation practices at the ORNL DAAC for global campaigns such as BOREAS, LBA, SAFARI 2000; and 3) enhance the capabilities to more effectively and efficiently expose and deliver "big" environmental data to broad range of users and systems

  13. The Energy Industry Profile of ISO/DIS 19115-1: Facilitating Discovery and Evaluation of, and Access to Distributed Information Resources

    Science.gov (United States)

    Hills, S. J.; Richard, S. M.; Doniger, A.; Danko, D. M.; Derenthal, L.; Energistics Metadata Work Group

    2011-12-01

    A diverse group of organizations representative of the international community involved in disciplines relevant to the upstream petroleum industry, - energy companies, - suppliers and publishers of information to the energy industry, - vendors of software applications used by the industry, - partner government and academic organizations, has engaged in the Energy Industry Metadata Standards Initiative. This Initiative envisions the use of standard metadata within the community to enable significant improvements in the efficiency with which users discover, evaluate, and access distributed information resources. The metadata standard needed to realize this vision is the initiative's primary deliverable. In addition to developing the metadata standard, the initiative is promoting its adoption to accelerate realization of the vision, and publishing metadata exemplars conformant with the standard. Implementation of the standard by community members, in the form of published metadata which document the information resources each organization manages, will allow use of tools requiring consistent metadata for efficient discovery and evaluation of, and access to, information resources. While metadata are expected to be widely accessible, access to associated information resources may be more constrained. The initiative is being conducting by Energistics' Metadata Work Group, in collaboration with the USGIN Project. Energistics is a global standards group in the oil and natural gas industry. The Work Group determined early in the initiative, based on input solicited from 40+ organizations and on an assessment of existing metadata standards, to develop the target metadata standard as a profile of a revised version of ISO 19115, formally the "Energy Industry Profile of ISO/DIS 19115-1 v1.0" (EIP). The Work Group is participating on the ISO/TC 211 project team responsible for the revision of ISO 19115, now ready for "Draft International Standard" (DIS) status. With ISO 19115 an

  14. TA 2: Final Report: Geospatial Data Archiving and Preservation

    OpenAIRE

    Lauriault, Tracey P.; Kennedy, Ed

    2011-01-01

    This report is written to meet the following objective: conduct research and provide analysis and recommendations on issue of archiving and preserving CGDI’s geospatial data assets, including solutions for perpetual access. The report is based primarily on research of available documents and literature, supplemented by consultations with a primary stakeholder, Library and Archives Canada (LAC). The report is structured in nine chapters, including this introduction. The second chapter provi...

  15. Description innovative practices for archives and special collections

    CERN Document Server

    Theimer, Kate

    2014-01-01

    Description: Innovative Practices for Archives and Special Collections explores how archives of different sizes and types can enhance the accessibility of their holdings. The book uses eleven case studies to demonstrate innovative ideas that could be transferred into many other settings. Readers can use these as models, sources of inspiration, or starting points for new discussions. The volume will be useful to those working in archives and special collections as well as other cultural heritage organizations, and provides ideas ranging from those that require long-term planning and coordinatio

  16. Assessing Accessibility in Four Library and Information Sciences Journals: A Comparative Study

    Directory of Open Access Journals (Sweden)

    Ali Sadatmoosavi

    2010-09-01

    Full Text Available The present study targets the rate of accessibility and decay of internet citations for the articles published in four LIS journals available through Emerald database for the 2005-2008 period. The findings indicated that of the 2886 URL cited, 1858 (64% were accessible while the rest were inaccessible. Using Internet Explorer, Internet Archive and Google, the inaccessible citations were reduced to 5%. URL accessibility demonstrated that 60% of the internet based citations are accessible through the URL cited. Among the error messages received, file error represented the highest (61%. URL distribution showed that the. net and. gov domains are more enduring and persistant when compared with. edu,. org and. com domains. The average internet citation for each article was 4.8.

  17. HRP Data Accessibility Current Status

    Science.gov (United States)

    Sams, Clarence

    2009-01-01

    Overview of talk: a) Content of Human Life Science data; b) Data archive structure; c) Applicable legal documents and policies; and d) Methods for data access. Life Science Data Archive (LSDA) contains research data from NASA-funded experiments, primarily data from flight experiments and ground analog data collected at NASA facilities. Longitudinal Study of Astronaut Health (LSAH) contains electronic health records (medical data) of all astronauts, including mission data. Data are collected for clinical purposes. Clinical data are analyzed by LSAH epidemiologists to identify trends in crew health and implement changes in pre-, in-, or post-flight medical care.

  18. Connecting digital architectural archives with MACE

    OpenAIRE

    Boeykens, Stefan

    2009-01-01

    In the domain of architecture, a huge amount of digital contents useful to academic and professional users is available online and in principle accessible from all over the world. However, because they reside in many different and unconnected systems, these contents are often hard to find with traditional search engines. MACE (Metadata for Architectural Contents in Europe) is a European eContentplus project [1] to connect architectural repositories and archives, providing a framework for ...

  19. Distributed opportunistic channel access strategy in DF relay networks%DF中继网络中的分布式机会信道接入策略

    Institute of Scientific and Technical Information of China (English)

    董蕾; 王勇超

    2016-01-01

    Considering the two limitations of scenario assumption and performance optimization in distributed opportunistic channel access under the continuous transmission rate, a distributed opportunistic channel access strategy is proposed in DF relay networks under the discrete transmission rate. The proposed strategy maximizes the system average throughput with the instruction of optimal stopping theory. By optimizing the second-hop transmission time in DF relay networks completely, the total transmission time is reduced, and the system performance is improved. Compared with the current strategy, simulation result demonstrates the validity of the proposed strategy in system average throughput.%针对连续传输速率下分布式机会信道接入场景设定与性能优化受限的问题,提出了离散传输速率下译码转发中继网络中的分布式机会信道接入策略.该策略在最优停止理论的指导下,将最大化系统平均吞吐率作为优化目标,通过对译码转发中继网络中的第2跳传输时间进行完全优化,使总体的传输时间大幅度减小,系统性能得到显著提高.仿真结果表明,相较现有策略,文中所提策略在系统平均吞吐率上具有明显优势.

  20. A Comprehensive Urban Atmosphere Database: The Urgent Archive At Badc

    Science.gov (United States)

    de Rudder, A.

    Launched by the British Natural Environment Research Council (NERC) in 1996, the Urban Regeneration and the Environment (URGENT) thematic programme funds 41 research projects related to urban pollution of water, soil, air and ecology and to the assessment of its influence on human health. The studies focus on urban and suburban areas in Great Britain. Fourteen of them pertain to atmospheric research and address issues as diverse as urban meteorology, dispersion of pollutants, homogeneous and heterogeneous chemistry, aerosol particle size distribution and composition, urban tree planting in relation to air composition, and particle toxicity. Adopted methodologies range from the analysis of data from field experiments to model simulations, often combining both. A few projects are interconnected; some conduct studies in collabo- ration with municipal authorities or industry. In addition to their scientific nature, some of the deliverables target an audience of urban planners and city council officials. Data collected or generated by the air projects are currently being submitted to the British Atmospheric Data Centre (BADC), which is the body designated by NERC to archive, maintain and distribute atmospheric data sets issued by NERC funded re- search and to provide support to researchers in issues related to data. The access to the data, which is kept restricted to the programme participants during the year following each project end, will be made public afterwards: by the end of 2002, two thirds of the archived data will have been released to the public domain. The present contribution will give a synthetic overview of the URGENT air project topics and deliverables and will outline the data distribution system of the BADC.

  1. Digitizing and Securing Archived Laboratory Notebooks

    Science.gov (United States)

    Caporizzo, Marilyn

    2008-01-01

    The Information Group at Millipore has been successfully using a digital rights management tool to secure the email distribution of archived laboratory notebooks. Millipore is a life science leader providing cutting-edge technologies, tools, and services for bioscience research and biopharmaceutical manufacturing. Consisting of four full-time…

  2. Open access och spridning : En kvantitativ analys av hur open access-publicerade artiklar citeras och sprids på webben

    OpenAIRE

    Granholm, Kris

    2013-01-01

    To publish research articles by the means of open access is to provide them for free to the reader. An increasing number of universities around the world have begun to institute open access policies regarding their researchers academic output, requiring them to primarily publish in open access journals and / or archive their pre- or post- prints in institutional archives. The aim of this this thesis is to explore how the adoption of the open access policy at the Swedish Universi- ty of Agricu...

  3. Case Study: Design and Performance Evaluation of a Permanent File Archiving System

    Energy Technology Data Exchange (ETDEWEB)

    Linton, L. H.

    1979-01-01

    A common problem confronting many computer installations is the allocation of the limited on-line disk space to the insatiable user demand for this space. When disks become so saturated that the system can no longer function efficiently, some files must be removed. This paper deals with the problem of attempting to optimally select among all the files those which should remain on-line and those which should be archived (information written to tape but directory entry with tape number left on-line). A user access of an archived file automatically spins off a system job to retrieve the file from its tape. An algorithm for selecting files for archiving was designed on the basis of some system performance goals and hypotheses about permanent file usage. An archiving performance analysis program was run periodically to monitor the impact on system performance, the impact on system resources and the accuracy of file selection. Two areas in which archiving might degrade system performance are the following: long waits by interactive users for archived files to become available, and a steep rise in the number of weekly tape mounts due to archived files. An adverse effect of archiving on system resources would be felt if the number of directory entries for archived files or the number of tapes needed to hold archived files increased greatly. Improvements in file selection were studied by characterizing files that either were frequently archived or were never archived and rarely used. 9 figures.

  4. CruiseViewer: SIOExplorer Graphical Interface to Metadata and Archives.

    Science.gov (United States)

    Sutton, D. W.; Helly, J. J.; Miller, S. P.; Chase, A.; Clark, D.

    2002-12-01

    We are introducing "CruiseViewer" as a prototype graphical interface for the SIOExplorer digital library project, part of the overall NSF National Science Digital Library (NSDL) effort. When complete, CruiseViewer will provide access to nearly 800 cruises, as well as 100 years of documents and images from the archives of the Scripps Institution of Oceanography (SIO). The project emphasizes data object accessibility, a rich metadata format, efficient uploading methods and interoperability with other digital libraries. The primary function of CruiseViewer is to provide a human interface to the metadata database and to storage systems filled with archival data. The system schema is based on the concept of an "arbitrary digital object" (ADO). Arbitrary in that if the object can be stored on a computer system then SIOExplore can manage it. Common examples are a multibeam swath bathymetry file, a .pdf cruise report, or a tar file containing all the processing scripts used on a cruise. We require a metadata file for every ADO in an ascii "metadata interchange format" (MIF), which has proven to be highly useful for operability and extensibility. Bulk ADO storage is managed using the Storage Resource Broker, SRB, data handling middleware developed at the San Diego Supercomputer Center that centralizes management and access to distributed storage devices. MIF metadata are harvested from several sources and housed in a relational (Oracle) database. For CruiseViewer, cgi scripts resident on an Apache server are the primary communication and service request handling tools. Along with the CruiseViewer java application, users can query, access and download objects via a separate method that operates through standard web browsers, http://sioexplorer.ucsd.edu. Both provide the functionability to query and view object metadata, and select and download ADOs. For the CruiseViewer application Java 2D is used to add a geo-referencing feature that allows users to select basemap images

  5. Natural sound archives: past, present and future.

    Science.gov (United States)

    Ranft, Richard

    2004-06-01

    Recordings of wild animals were first made in the Palearctic in 1900, in the Nearctic in 1929, in Antarctica in 1934, in Asia in 1937, and in the Neotropics in the 1940s. However, systematic collecting did not begin until the 1950s. Collections of animal sound recordings serve many uses in education, entertainment, science and nature conservation. In recent years, technological developments have transformed the ways in which sounds can be sampled, stored and accessed. Now the largest collections between them hold altogether around 0.5 million recordings with their associated data. The functioning of a major archive will be described with reference to the British Library Sound Archive. Preserving large collections for the long term is a primary concern in the digital age. While digitization and digital preservation has many advantages over analogue methods, the rate of technology change and lack of standardization are a serious problem for the world's major audio archives. Another challenge is to make collections more easily and widely accessible via electronic networks. On-line catalogues and access to the actual sounds via the internet are already available for some collections. Case studies describing the establishment and functioning of sound libraries in Mexico, Colombia and Brazil are given in individually authored sections in an Appendix. PMID:15258666

  6. The Long Term Fate of Our Digital Belongings: Toward a Service Model for Personal Archives

    OpenAIRE

    Marshall, Catherine C.; Bly, Sara; Brun-Cottan, Francoise

    2007-01-01

    We conducted a preliminary field study to understand the current state of personal digital archiving in practice. Our aim is to design a service for the long-term storage, preservation, and access of digital belongings by examining how personal archiving needs intersect with existing and emerging archiving technologies, best practices, and policies. Our findings not only confirmed that experienced home computer users are creating, receiving, and finding an increasing number of digital belongi...

  7. Understanding the audience: survey into the use of archives by teachers in Scotland

    OpenAIRE

    Diamond, Alison

    2016-01-01

    This research into the use of archives by teachers in Scotland demonstrates that there is a curriculum led need and a desire from teachers to use primary source material with their pupils. It also shows however that many teachers have no expertise in finding or using archives, find online access time-consuming and difficult, and many do not distinguish between archives and other primary sources held by libraries, museums and galleries. In the light of this evidence and current priorities, thi...

  8. Share Research Results in Open Access

    OpenAIRE

    Das, Anup-Kumar

    2015-01-01

    In an academic research environment, scholarly communications become central part of the process of deliberations. Scholars across the world are now better equipped with services offered by open access knowledge repositories for self-archiving their intellectual outcomes of scholarly research, i.e., research publications and research reports. Global open access statements enlighten academic researchers to make use of Green open access channels for harnessing global visibility, readability and...

  9. Open Access and DSpace Institutional Repository System

    OpenAIRE

    Çelik, Sönmez; Gürdal, Gültekin; Keten, Burcu; Türkfidanı, Ata; Kutlutürk, Levent

    2013-01-01

    The Open Access movement is a social movement in academia, dedicated to the principle of open access - to information - sharing for the common good and is being supported by many scientists, publishers, and researchers in the world, today. The software that is used to operate the institutional archive systems which are the basis of the Open Access, are divided into two forms of some free open source software and paid package programs which were developed by some corporates. DSpace, whose firs...

  10. Open Access Initiatives in India - an Evaluation

    OpenAIRE

    Leila Fernandez

    2006-01-01

    Developing countries have embraced open access with a view to promoting visibility of research done in these regions. Open access initiatives described in this paper are based on interviews with information professionals responsible for creation and maintenance of online research repositories in India. Open access journals, e-print archives and e-theses repositories are covered with an emphasis on the sciences including the physical sciences, mathematics and the biomedical sciences. Existing ...

  11. The EarthScope Plate Boundary Observatory Distributed Data Management System

    Science.gov (United States)

    Anderson, G.; Eakins, J.; Hodgkinson, K.; Matykiewicz, J.; Beldyk, M.; Blackman, B.; Boler, F.; Henderson, B.; Hoyt, B.; Lee, E.; Persson, E.; Smith, J.; Torrez, D.; Wright, J.; Jackson, M.; Meertens, C.

    2007-05-01

    distribute all PBO strainmeter data products, and IRIS archives all PBO seismic data products; all told, more than 160 GB of strain and seismic data products are available from these archives. These same two centers also archive other EarthScope seismic and strain data, which makes it much simpler for users to access EarthScope products from a unified set of centers. PBO and EarthScope data products may be accessed using a variety of tools. The PBO Web site (http:pboweb.unavco.org) provides centralized access to PBO products stored in our distributed archives. For example, GPS products may be accessed from http:pboweb.unavco.org/gps_data and strain data products from http:pboweb.unavco.org/strain_data. In addition, the individual archives provide access to their holdings, both for PBO and other networks, through a variety of discipline-specific tools. The most exciting development still to come in providing access to EarthScope data products will be the creation of the EarthScope Portal. This system will be based on Web services, operated by the EarthScope components, that provide access to holdings at the EarthScope archives and are linked to a central Web portal. This system will provide a unified system for discovery and access to EarthScope digital data products, and is planned to be operational by October 2008.

  12. Accessing Scholarly Information in Networked Environment through Institutional Repositories

    OpenAIRE

    Anil Kumar, Dhiman; Hemant, Sharma

    2008-01-01

    The archival collection of libraries is increasingly-being converted into digital format. Institutional Repositories are the result of such programmes which make available the archival collections over networks to its users. In addition, they also provide direct output of an institution or organization’s research contribution in digital format for quick access of the users.

  13. Archiving the Relaxed Consistency Web

    OpenAIRE

    Xie, Zhiwu; Van de Sompel, Herbert; Liu, Jinyang; Van Reenen, Johann; Jordan, Ramiro

    2013-01-01

    The historical, cultural, and intellectual importance of archiving the web has been widely recognized. Today, all countries with high Internet penetration rate have established high-profile archiving initiatives to crawl and archive the fast-disappearing web content for long-term use. As web technologies evolve, established web archiving techniques face challenges. This paper focuses on the potential impact of the relaxed consistency web design on crawler driven web archiving. Relaxed consist...

  14. Lifetime Surveillance of Astronaut Health (LSAH) / Life Sciences Data Archive (LSDA) Data Request Helpdesk

    Science.gov (United States)

    Young, Millennia; Van Baalen, Mary

    2016-01-01

    This session is intended to provide to HRP IWS attendees instant feedback on archived astronaut data, including such topics as content of archives, access, request processing, and data format. Members of the LSAH and LSDA teams will be available at a 'help desk' during the poster sessions to answer questions from researchers.

  15. IACTalks: an on-line archive of astronomy-related seminars

    DEFF Research Database (Denmark)

    Knapen, Johan H.; Pérez Prieto, Jorge A.; Shahbaz, Tariq;

    2012-01-01

    We present IACTalks, a free and open access seminars archive (http://iactalks.iac.es) aimed at promoting astronomy and the exchange of ideas by providing high-quality scientific seminars to the astronomical community. The archive of seminars and talks given at the Instituto de Astrofi\\'isica de...

  16. CHAOS: User-driven Development of a Metadata Scheme for Radio Broadcast Archives

    DEFF Research Database (Denmark)

    Lund, Haakon; Bogers, Toine; Larsen, Birger; Lykke, Marianne

    CHAOS (Cultural Heritage Archive Open System) is a digital platform for Danish radio broadcasts. Radio broadcasts are an important and vibrant part of our cultural heritage, but providing efficient and effective access to such archives is challenging for lack of a solid digital infrastructure. The...

  17. OPALES: An Environment for Sharing Knowledge Among Experts Working on Multimedia Archives.

    Science.gov (United States)

    Betaille, Henri; Nanard, Marc; Nanard, Jocelyne

    INA, the 'Institut National de l'Audiovisuel' keeps records of national TV and radio production as French patrimonial archives. They are mainly accessed by specialists for research purposes, and by TV producers for inserting archive segments within new productions. INA and several other partners have initiated an R&D project, OPALES, to develop a…

  18. Enduring Paradigm, New Opportunities: The Value of the Archival Perspective in the Digital Environment.

    Science.gov (United States)

    Gilliland-Swetland, Anne J.

    This report examines the experiences and contributions of the archival community--practicing archivists, manuscript curators, archival academics, and policy makers who work to define and promote the social utility of records and to identify, preserve, and provide access to documentary heritage regardless of format. The report addresses how the…

  19. Finding and Addressing the Gaps: Two Evaluations of Archival Reference Services

    Science.gov (United States)

    Battley, Belinda; Wright, Alicia

    2012-01-01

    Regular evaluation of archival reference services is essential to ensure that users have appropriate access to the information they need. Archives New Zealand has been measuring customer satisfaction for many years using self-completion questionnaires but recently trialed two new methods of evaluation, using external research companies. One…

  20. The European Radiobiology Archives (ERA), its present status, relation to other radiobiology archives and future development

    International Nuclear Information System (INIS)

    The European Radiobiology Archives (ERA) in cooperation with the US (National Radiobiology Archives, NRA) and Japanese (Japanese Radiobiology Archives, JRA) aim to collect most of the information still available in Europe on long-term animal experiments - including some selected human studies suitable for comparison with animal data - and to make them available to the scientific community for further analysis. Presently, the archives contain a description of the exposure conditions, animal strains, etc from ∝350.000 individuals, and data on survival and pathology are available from ∝200.000 individuals. These data are incorporated in an ACCESS 2000 database, which also includes means (forms with underlying computer code) for browsing through the data, searching for groups given certain treatments, using specific animal strains or age, etc. Other forms allow the selection of experimental groups, their evaluation by some statistical programs and their export for further detailed studies by interested scientists. The forms also allow researchers to combine groups and to pool diseases into larger classes, e.g. all malignant tumours, all lung tumours etc., features that are important when studies from different laboratories are to be evaluated. The use of the database is illustrated by an example on the selection and preparation for further analysis of data dealing with the effects of 224Ra. The collection of data will continue in the future; and the archives will liase with similar ventures such as the European 'pathbase'. The user interface will be developed further for accessibility and user friendliness and be continuously adjusted to the current state of the art of hardware and software. The archives are to be transferred to the Bundesamt fuer Strahlenschutz (BfS), Neuherberg, Germany under the sponsorship of the European Commission and in collaboration with the European Late Effect Project Group (EULEP). (orig.)

  1. Ames Life Science Data Archive: Translational Rodent Research at Ames

    Science.gov (United States)

    Wood, Alan E.; French, Alison J.; Ngaotheppitak, Ratana; Leung, Dorothy M.; Vargas, Roxana S.; Maese, Chris; Stewart, Helen

    2014-01-01

    The Life Science Data Archive (LSDA) office at Ames is responsible for collecting, curating, distributing and maintaining information pertaining to animal and plant experiments conducted in low earth orbit aboard various space vehicles from 1965 to present. The LSDA will soon be archiving data and tissues samples collected on the next generation of commercial vehicles; e.g., SpaceX & Cygnus Commercial Cargo Craft. To date over 375 rodent flight experiments with translational application have been archived by the Ames LSDA office. This knowledge base of fundamental research can be used to understand mechanisms that affect higher organisms in microgravity and help define additional research whose results could lead the way to closing gaps identified by the Human Research Program (HRP). This poster will highlight Ames contribution to the existing knowledge base and how the LSDA can be a resource to help answer the questions surrounding human health in long duration space exploration. In addition, it will illustrate how this body of knowledge was utilized to further our understanding of how space flight affects the human system and the ability to develop countermeasures that negate the deleterious effects of space flight. The Ames Life Sciences Data Archive (ALSDA) includes current descriptions of over 700 experiments conducted aboard the Shuttle, International Space Station (ISS), NASA/MIR, Bion/Cosmos, Gemini, Biosatellites, Apollo, Skylab, Russian Foton, and ground bed rest studies. Research areas cover Behavior and Performance, Bone and Calcium Physiology, Cardiovascular Physiology, Cell and Molecular Biology, Chronobiology, Developmental Biology, Endocrinology, Environmental Monitoring, Gastrointestinal Physiology, Hematology, Immunology, Life Support System, Metabolism and Nutrition, Microbiology, Muscle Physiology, Neurophysiology, Pharmacology, Plant Biology, Pulmonary Physiology, Radiation Biology, Renal, Fluid and Electrolyte Physiology, and Toxicology. These

  2. Mariner 10 Image Archive

    Data.gov (United States)

    National Aeronautics and Space Administration — The Mariner 10 Image Archive includes tools to view shaded relief maps of the surface of Mercury, a 3D globe, and all images acquired by NASA's Mariner 10 mission.

  3. Emergency_RDS_ARCHIVE

    Data.gov (United States)

    Vermont Center for Geographic Information — Archive of past 9-1-1 data releases at rough yearly intervals chosen from availbable datasets from 1999 to present. For a historical overview on the genesis of this...

  4. The Digital Archive Experience

    DEFF Research Database (Denmark)

    Søndergaard, Morten

    2009-01-01

    This article, as well as the book, investigates the ways in which new digital media may enhance the experience of the art-archive. Taken as a whole, the new media is a vital component of a 'transdisciplinary' and transformative field, a cultural landscape that is changing rapidly the conditions...... and domains of the archive and the (art)museum. How, then, should the functions and strengths of both archive and museum be shaped to meet those cultural and technological changes? When the Internet and world wide web became 'the place to be' commercially, museums followed suit and established their own sites....... The book discusses the challenges of the archive and the (art)museum in the age of digital media. It is based upon documentation from a research project, MAP - Media Art Platform, that drew upon the talents and collaboration of many institutions, artists, programmers, art historians, designers and others...

  5. Sequence Read Archive (SRA)

    Data.gov (United States)

    U.S. Department of Health & Human Services — The Sequence Read Archive (SRA) stores raw sequencing data from the next generation of sequencing platforms including Roche 454 GS System®, Illumina Genome...

  6. The access project: agro-climatic change and european soil suitability - a spatially distributed soil, agro-climatic and soil hydrological model

    Directory of Open Access Journals (Sweden)

    P. J. Loveland

    1996-09-01

    Full Text Available Most attempts to predict the effects of climate change on soils, and hence land use, have been made at coarse scales and have made little use of the detailed soil, land use and climatic information available. Much of this information is available in digital form and lends itself readily to manipulation by computer procedures, often within geographic information systems. The ACCESS project was designed to take advantage of this situation. The target was a spatially distributed soil, agro-climatic and soil hydrological model to predict the effects of climate change on land use within the European Community. In the event, the project was extended successfully to Hungary, Poland and Romania, which gave a much wider range of soil, soil hydrological and climatic regimes than originally envisaged. The model structure drew on earlier work, which related simple soil properties, such as might be obtained during soil surveys, to crop suitability. More powerful approaches to the estimation of the soil hydrological state and crop water demands were incorporated into the new model, as are new approaches to land type classification. Much effort also went into deriving robust pedo-transfer functions, which allow the derivation of soil hydrological properties from simple soil survey data. The new model (ACCESS was purposely designed to run at two levels; a more general approach to utilise the results of the site specific approach to allow extrapolation of the modelling to large areas of land, and a detailed approach to use site specific data for calibration and validation. The most significant difference between the two routes through the model, is that the site specific model operates at a daily meteorological time-step, whilst the broad scale model runs at a monthly time-step.

  7. The Herschel Science Archive

    OpenAIRE

    Verdugo, Eva

    2015-01-01

    The Herschel mission required a Science Archive able to serve data to very different users: The own Data Analysis Software (both Pipeline and Interactive Analysis), the consortia of the different instruments and the scientific community. At the same time, the KP consortia were committed to deliver to the Herschel Science Centre,  the processed products corresponding to the data obtained as part of their Science Demonstration Phase and the Herschel Archive should include the capability to...

  8. Channel access: A software bus for the LAACS

    International Nuclear Information System (INIS)

    The host processor for a code running within a distributed process control system is often predetermined by constraints built into the software architecture of the control system. Input/output (I/O) channels directly connected to the host processors are usually easier to access in software than channels on remote processors. It is often difficult to modernize selective parts of a control system's software while leaving the other parts unchanged. Likewise, software developed at one laboratory is often difficult to integrate into a control system developed at another laboratory. Software that runs in one machine or operating-system architecture is often unable to communicate with control-system software running on a different platform. For the Los Alamos Accelerator Control System (LAACS) we have attempted to address the above difficulties with a software communication facility which we call Channel Access. Channel Access provides a 'software bus' that allows programs to be connected through a network to I/O channels on real-time processors in a manner similar to the way in which hardware modules are integrated within a standardized hardware bus such as CAMAC or VME. We have already placed an operator interface on Channel Access and we are currently designing alarm, archiving and sequencing tools as well. Numerous application-specific programs use Channel Access. This paper describes the unique feature of this approach and its performance as an integral part of the Los Alamos Accelerator Control System. (orig.)

  9. Integrating heterogeneous and distributed information about marine species through a top level ontology

    OpenAIRE

    Tzitzikas, Yannis; Carlo, Allocca; Bekiari, Chryssoula; Marketakis, Yannis; Fafalios, Pavlos; Doerr, Martin; Minadakis, Nikos; Patkos, Theodore; Candela, Leonardo

    2013-01-01

    One of the main characteristics of biodiversity data is its cross-disciplinary feature and the extremely broad range of data types, structures, and semantic concepts which encompasses. Moreover, biodiversity data, especially in the marine domain, is widely distributed, with few well-established repositories or standard protocols for their archiving, access, and retrieval. Our research aims at providing models and methods that allow integrating such information either for publishing it, browsi...

  10. FTP archives for physics

    International Nuclear Information System (INIS)

    We have established archives for programs, data, papers etc. in physics (mainly for plasma physics). The archives are located at computer ftp.muni.cz in the directory pub/muni.cz/physics. These archives can be reached by anonymous FTP or by gopher server gopher.muni.cz (147.251.4.33). At the present time, programs for PC, cross sections for electrons, swarm parameters and rate constants stored are in the archives. We would like to collect the programs for calculations in physics (mainly for PC). We suppose that each program should have a testing example and some description. We would also like to collect physical constants and experimental or theoretical data (e.g. cross sections, swarm parameters and rate constants), which are important for other calculation or for comparison with the results of others studies. Interested scholars are invited to sent us their programs, data, preprints and reports for these archives. All files in the archives are in public domain and can be obtained using computer network Internet

  11. Translating PrEP effectiveness into public health impact: key considerations for decision-makers on cost-effectiveness, price, regulatory issues, distributive justice and advocacy for access

    Directory of Open Access Journals (Sweden)

    Catherine Hankins

    2015-07-01

    Full Text Available Introduction: The extraordinary feat of proving the effectiveness of oral pre-exposure prophylaxis (PrEP in clinical trials in different populations in a variety of settings may prove to have been easier than ensuring it is used well. Decision-makers must make difficult choices to realize the promise of antiretroviral prophylaxis for their countries. This paper outlines key economic, regulatory and distributive justice issues that must be addressed for effective and acceptable PrEP implementation. Discussion: In considering the role that PrEP can play in combination prevention programmes, decision-makers must determine who can benefit most from PrEP, how PrEP can be provided safely and efficiently, and what kind of health system support will ensure successful implementation. To do this, they need contextualized information on disease burden by population, analyses of how PrEP services might best be delivered, and projections of the human resource and infrastructure requirements for each potential delivery model. There are cost considerations, varying cost-effectiveness results and regulatory challenges. The principles of ethics can inform thorny discussions about who should be prioritized for oral PrEP and how best to introduce it fairly. We describe the cost-effectiveness of PrEP in different populations at higher risk of HIV exposure, its price in low- and middle-income countries, and the current regulatory situation. We explore the principles of ethics that can inform resource allocation decision-making about PrEP anchored in distributive justice, at a time when universal access to antiretroviral treatment remains to be assured. We then highlight the role of advocacy in moving the PrEP agenda forward. Conclusions: The time is ripe now for decisions about whether, how and for whom PrEP should be introduced into a country's HIV response. It has the potential to contribute significantly to high impact HIV prevention if it is tailored to those

  12. SIOExplorer: Opening Archives for Education

    Science.gov (United States)

    Miller, S. P.; Staudigl, H.; Johnson, C.; Helly, J.; Day, D.

    2003-04-01

    The SIOExplorer project began with a desire to organize the data archives of the Scripps Institution of Oceanography, which include the observations from 822 cruises over 50 years. Most of the data volume comes from 244 multibeam seafloor swath mapping cruises since 1982. Rather than just create an online archive or a website, the decision was made to build a fully searchable digital library, and to include related historical images and documents from the SIO Archives in the SIO Library. It soon became apparent that much of the material would be appealing to students of all ages, as well as the general public. Access to several global databases was added, along with the seamount catalog and geochemical resources of www.earthref.org. SIOExplorer has now become a part of the National Science Digital Library (www.nsdl.org) and can be accessed directly at http://SIOExplorer.ucsd.edu. From the beginning, it was obvious that a scalable Information Technology architecture would be needed. Data and documents from three separate organizations would need to be integrated initially, with more to follow in subsequent years. Each organization had its own data standards and formats. Almost no metadata existed. With millions of files and approximately 1 terabyte of data, we realized that a team approach would be required, combining the expertise of SIO, the UCSD Libraries and the San Diego Supercomputer Center. General purpose tools have now been developed to automate collection development, create and manage metadata, and geographically search the library. Each digital object in the library has an associated metadata structure, which includes a Dublin Core block along with domain-specific blocks, as needed. Objects can be searched geospatially, temporally, by keyword, and by expert-level. For example, expert-level classification makes it possible to screen out research-grade contents, revealing material appropriate for the selected grade, such as K-6. Now that the library has

  13. The Open Access Initiative: A New Paradigm for Scholarly Communications

    OpenAIRE

    Yiotis, Kristin

    2013-01-01

    This paper gives an account of the origin and development of the Open Access Initiative (OAI) and the digital technology that enables its existence. The researcher explains the crisis in scholarly communications and how open access (OA) can reform the present system. OA has evolved two systems for delivering research articles: OA archives or repositories and OA journals. They differ in that OA journals conduct peer review and OA archives do not. Discussion focuses on how these two delivery sy...

  14. Development of a GPS Seamless Archive

    Science.gov (United States)

    Scharber, M.; Bock, Y.; Gilmore, B.

    2003-12-01

    The Scripps Orbit and Permanent Array Center (SOPAC) has completed development of software for UNAVCO's GPS Seamless Archive Center (GSAC). The GSAC is a collection of GPS data archives and their operating agencies that have agreed to exchange information about their individual data holdings. GSAC allows a user to locate GPS data and metadata from these different archives through a single interface; hence GSAC is an operating virtual observatory for continuous and "campaign" GPS data. Data providers collect or generate data and then supply the data to data wholesalers. Data wholesalers collect and archive data and metadata, from one or more data providers. GSAC currently has 7 U.S.-based data wholesalers (NASA's CDDIS, UC Berkeley's NCEDC, NGS, CWU's PANGA archive, SCEC, SOPAC, and UNAVCO). Together these archives hold over 2 million GPS data (RINEX) files collected for over 10,000 monuments, including a nearly complete set of data collected between 1986 and 2003 for the global network and western North America, and a significant quantity of data collected by U.S. scientists in other tectonically active regions. Data retailers collect information from the wholesalers in a well-defined manner and run a service for clients to access the information. Currently there are two GSAC retailers (SOPAC and UNAVCO). The GSAC software suite includes a Web-based interactive client (GSAC Wizard) to locate data, a command-line client to locate and download data, and a retailer service that uses a macro language to pass commands to a server using the http url. The command-line client uses the retailer service to communicate with the retailer server. SOPAC has also modified its map interface to work with GSAC so that GPS data can be located using a spatial context, and maintains a GSAC Home Page (http://gsac.ucsd.edu). In this abstract, we highlight achievements and lessons learned from our development of the current system, but focus on a possible next generation GSAC that will

  15. Distributed Access Teaching Assistant (DATA)

    Science.gov (United States)

    Koch, John; van der Sluys, William G.

    2001-12-01

    We have developed an online examination system that can provide nearly instantaneous feedback to students concerning the results of examinations having a variety of formats. This program utilizes the scripting language Frontier in combination with standard hypertext markup language (HTML) forms. A unique aspect of the program is the option of programming mathematical formulas utilizing input data from the form in a fashion akin to a spreadsheet. We have made use of this capability in our introductory chemistry laboratory program. For each experiment students are required to submit primary data and results of any calculations using a form that automatically checks their submission and can provide feedback on possible sources of calculational errors and the accuracy of results.

  16. AccessCulture

    DEFF Research Database (Denmark)

    Valtysson, Bjarki

    the European Union, and how its cultural policy responds to the changes that the digital paradigm has brought upon the field. The self-publishing features of various Web 2.0 platforms, along with the interactive and distributional potentials that the Internet offers, have given rise to what is...... theoretician which I make use of, is Lev Manovich, in particular his definition of new media and the culture of remixability. Therefore, just like the remixable culture of prosumers, the theoretical construction of this work is a remix. In order to exemplify my understanding of the remixable culture of...... prosumers, I analyse the well-known examples of YouTube, MySpace, Facebook and Flickr, along with lesser known platforms such as the animated short film Elephants Dream, the BBC's Creative Archive, various Internet artworks and the Internet Archive. I furthermore introduce the copyright system Creative...

  17. Transnational archives: the Canadian case

    Directory of Open Access Journals (Sweden)

    Julia Creet

    2011-05-01

    Full Text Available This paper is a brief overview of the concept of the transnational archive as a counterpoint to the idea that a national archive is necessarily a locus of a static idea of nation. The Canadian national archives is used as a case study of an archives that was transnational in its inception, and one that has continued to change in its mandate and materials as a response to patterns in migration and changing notions of multiculturalism as a Canadian federal policy. It introduces the most recent formation of the transnational archive and its denizens: the genealogical archive inhabited by family historians.

  18. Ngbugu digital wordlist: A test case for best practices in archiving and presenting language documentation

    OpenAIRE

    Gary F. Simons; Kenneth S. Olson; Paul S. Frank

    2007-01-01

    Language documentation faces challenges of data preservation and accessibility. Data can be lost due to physical deterioration (e.g. field notes or tape recordings) or outdated format (e.g. Microsoft Word 3.0). Archived data is typically difficult to access, and it is sometimes found that the archived information is inadequate for research purposes. Increased interest in language documentation has coincided with advancements in digital technologies, offering hope for meeting these challenges....

  19. Download - KEGG MEDICUS | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available [ Credits ] BLAST Search Image Search Home About Archive Update History Contact us ...F URLs by Artio About This Database Database Description Download License Update History of This Database Site Policy | Contact Us Download - KEGG MEDICUS | LSDB Archive ...

  20. Download - TP Atlas | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available [ Credits ] BLAST Search Image Search Home About Archive Update History Contact us ...Ls by Artio About This Database Database Description Download License Update History of This Database Site Policy | Contact Us Download - TP Atlas | LSDB Archive ...

  1. Protein - AT Atlas | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available [ Credits ] BLAST Search Image Search Home About Archive Update History Contact us ...base Description Download License Update History of This Database Site Policy | Contact Us Protein - AT Atlas | LSDB Archive ...

  2. Download - RGP caps | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available [ Credits ] BLAST Search Image Search Home About Archive Update History Contact us ...atabase Description Download License Update History of This Database Site Policy | Contact Us Download - RGP caps | LSDB Archive ...

  3. Main - KOME | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available [ Credits ] BLAST Search Image Search Home About Archive Update History Contact us ... Download License Update History of This Database Site Policy | Contact Us Main - KOME | LSDB Archive ...

  4. Download - PLACE | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available [ Credits ] BLAST Search Image Search Home About Archive Update History Contact us ... About This Database Database Description Download License Update History of This Database Site Policy | Contact Us Download - PLACE | LSDB Archive ...

  5. Nucleotide Sequence - KOME | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available [ Credits ] BLAST Search Image Search Home About Archive Update History Contact us ...rtio About This Database Database Description Download License Update History of This Database Site Policy | Contact Us Nucleotide Sequence - KOME | LSDB Archive ...

  6. Reference - PLACE | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available [ Credits ] BLAST Search Image Search Home About Archive Update History Contact us ... Artio About This Database Database Description Download License Update History of This Database Site Policy | Contact Us Reference - PLACE | LSDB Archive ...

  7. Download - AT Atlas | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available [ Credits ] BLAST Search Image Search Home About Archive Update History Contact us ...base Description Download License Update History of This Database Site Policy | Contact Us Download - AT Atlas | LSDB Archive ...

  8. Trimming information - KOME | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available [ Credits ] BLAST Search Image Search Home About Archive Update History Contact us ...SEF URLs by Artio About This Database Database Description Download License Update History of This Database Site Policy | Contact Us Trimming information - KOME | LSDB Archive ...

  9. Download - GETDB | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available [ Credits ] BLAST Search Image Search Home About Archive Update History Contact us ...io About This Database Database Description Download License Update History of This Database Site Policy | Contact Us Download - GETDB | LSDB Archive ...

  10. Main data - RMG | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available [ Credits ] BLAST Search Image Search Home About Archive Update History Contact us ...Description Download License Update History of This Database Site Policy | Contact Us Main data - RMG | LSDB Archive ...

  11. Experiments list - DGBY | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available [ Credits ] BLAST Search Image Search Home About Archive Update History Contact us ...This Database Database Description Download License Update History of This Database Site Policy | Contact Us Experiments list - DGBY | LSDB Archive ...

  12. Download - Plabrain DB | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available [ Credits ] BLAST Search Image Search Home About Archive Update History Contact us Plabrain...escription Download License Update History of This Database Site Policy | Contact Us Download - Plabrain DB | LSDB Archive ...

  13. RLG, Where Museums, Libraries, and Archives Intersect

    Directory of Open Access Journals (Sweden)

    Anne van Camp

    2003-09-01

    Full Text Available This presentation was prepared for the session "Towards integrated resource discovery and seamless access to hybrid materials." This topic is of particular interest to RLG (Research Libraries Group because the organization has a long and abiding interest in working to provide integrated access to research information from museums, libraries, and archives. What is RLG? RLG is a non-profit consortium of over 160 research institutions from 15 different countries. Included are major universities, national libraries and archives, major museums, and other special kinds of historical collections. The mission of RLG is to collaboratively improve access to information that supports research and learning. The two major streams of activity in this regard include programs and projects that address problems shared by a number of institutions, and the creation of information discovery and delivery services. Member programs and projects are designed to develop solutions to problems in the area of access and preservation of research materials. Types of activities in this area are standards development, creation of guidelines and best practices for description, particularly in the area of unique or primary materials. Often the work of member task groups will result in the fuller development and implementation of online services. The RLG Union Catalog was initially the product solely of member institutions pooling their resources so they could share cataloging information. It now includes data from hundreds of libraries around the world. Two resources that have recently been developed in this way are RLG Archival Resources and RLG Cultural Materials and those are the focus of this presentation.

  14. Overview of Data Discovery and Access at the Atmospheric Science Data Center (ASDC)

    Science.gov (United States)

    Rinsland, P. L.; Little, M. M.; Kusterer, J.; Tisdale, M.; Johnson, C. J.; Quam, B. M.

    2013-12-01

    The Atmospheric Science Data Center (ASDC), in its role as an Earth Observing System Data and Information System (EOSDIS) Distributed Active Archive Center (DAAC) has made substantial improvements to the ways in which data is delivered. The architecture and services have been developed in response to both emerging customer needs to support multiple paths for access and associated technologies. Consideration of user interfaces and automated machine to machine methods will be described. This presentation provides an overview of the approach and how the various elements of data, metadata, and documentation are provided to the access methods at the ASDC. These include recently refreshed conventional ordering tools, Esri and Open-source GIS products, and piloting efforts to optimize Open-source Project for a Network Data Access Protocol (OPeNDAP), Hadoop, and Integrated Rule Oriented Data Systems (iRODS).

  15. Main - RPSD | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available [ Credits ] BLAST Search Image Search Home About Archive Update History Contact us ... File URL: ftp://ftp.biosciencedbc.jp/archive/rpsd/LATEST/rpsd_main_sjis.zip File... size: 120 KB File name: rpsd_main_utf8.zip File URL: ftp://ftp.biosciencedbc.jp/archive/rpsd/LATEST/rpsd_ma...icense Update History of This Database Site Policy | Contact Us Main - RPSD | LSDB Archive ...

  16. Sustainable Archiving and Storage Management of Audiovisual Digital Assets

    OpenAIRE

    Addis, Matthew; Norlund, Charlotte; Beales, Richard; Lowe, Richard; Middleton, Lee; Zlatev, Zlatko

    2009-01-01

    With the advent of end-to-end tapeless production and distribution, the whole concept of what it means to archive audiovisual content is being challenged. The traditional role of the archive as a repository for material after broadcast is changing because of digital file-based technologies and high speed networking. Rather than being at the end of the production chain, the archive is becoming an integral part of the production process and as a result is being absorbed into wider digital stora...

  17. Three Good Reasons for Celebrating at the ESO/ST-ECF Science Archive Facility

    Science.gov (United States)

    2000-12-01

    can be requested from ESO or ST-ECF and is now available in PDF format on the web. As a small token, the two astronomers will receive a commemorative version of the photo that accompanies this release. The ASTROVIRTEL initiative One of the major new initiatives undertaken by ESO and ST-ECF in connection with the ESO/ST-ECF Science Archive is ASTROVIRTEL (Accessing Astronomical Archives as Virtual Telescopes) , cf. ESO PR 09/00. It is a project aimed at helping scientists to cope efficiently with the massive amounts of data now becoming available from the world's leading telescopes and so to exploit the true potential of the Archive treasures. ASTROVIRTEL represents the European effort in an area that many astronomers considers one of the most important developments within observing astronomy in the past decade. The future The head of the ESO/ST-ECF Science Archive Facility , Benoît Pirenne , believes that the future holds exciting challenges: "Due to the many improvements of the ESO, NASA and ESA telescopes and instruments expected in the coming years, we anticipate a tremendous increase in the amount of data to be archived and re-distributed. It will not be too long before we will have to start counting storage space in Petabytes (1 Petabyte = 1,000 Terabytes). We are now trying to figure out how to best prepare for this new era." But he is also concerned with maintaining and further enhancing the astronomical value of the data that are made available to the users: "Apart from improving the data storage, we need to invest much effort in building automatic software that will help users with the tedious pre-processing and 'cleaning' of the data, thereby allowing them to focus more on scientific than technical problems."

  18. Report of the experts group on the taxation of the access to gas transport and distribution network; Rapport du groupe d'experts sur la tarification de l'acces aux reseaux de transport et de distribution de gaz

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-04-01

    In the framework of a new french gas industry organization (directive of the 22 june 1998), a concerting mission has been realized on prices taxation for the transport and distribution facilities. The following topics have been debated: the integration and competition of the european gas market, the gas market liberalization consistency and the taxation of transport and distribution network access. (A.L.B.)

  19. Main - PLACE | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available [ Credits ] BLAST Search Image Search Home About Archive Update History Contact us ...URL: ftp://ftp.biosciencedbc.jp/archive/place/LATEST/place_main.zip File size: 48...97) Joomla SEF URLs by Artio About This Database Database Description Download License Update History of This Database Site Policy | Contact Us Main - PLACE | LSDB Archive ...

  20. Entire Sequence - RMG | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available [ Credits ] BLAST Search Image Search Home About Archive Update History Contact us ...us RAP-DB genome browser. Data file File name: rmg_seq.zip File URL: ftp://ftp.biosciencedbc.jp/archive/rmg/...n Download License Update History of This Database Site Policy | Contact Us Entire Sequence - RMG | LSDB Archive ...

  1. ORF information - KOME | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available [ Credits ] BLAST Search Image Search Home About Archive Update History Contact us ...e longest ORFs Data file File name: kome_orf_infomation.zip File URL: ftp://ftp.biosciencedbc.jp/archive/kom...e Description Download License Update History of This Database Site Policy | Contact Us ORF information - KOME | LSDB Archive ...

  2. Product annotations - KOME | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available [ Credits ] BLAST Search Image Search Home About Archive Update History Contact us ...ile name: kome_product_annotation.zip File URL: ftp://ftp.biosciencedbc.jp/archiv...ate History of This Database Site Policy | Contact Us Product annotations - KOME | LSDB Archive ...

  3. Envirion - KEGG MEDICUS | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available [ Credits ] BLAST Search Image Search Home About Archive Update History Contact us ... file File name: kegg_medicus_environ_en.zip File URL: ftp://ftp.biosciencedbc.jp/archive/kegg-medicus/LATES...oomla SEF URLs by Artio About This Database Database Description Download License Update History of This Database Site Policy | Contact Us Envirion - KEGG MEDICUS | LSDB Archive ...

  4. Basical information - KOME | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available [ Credits ] BLAST Search Image Search Home About Archive Update History Contact us ...ation about full-length cDNA clones Data file File name: kome_basical_information.zip File URL: ftp://ftp.biosciencedbc.jp/archiv...base Database Description Download License Update History of This Database Site Policy | Contact Us Basical information - KOME | LSDB Archive ...

  5. Training in the Archives: Archival Research as Professional Development

    Science.gov (United States)

    Buehl, Jonathan; Chute, Tamar; Fields, Anne

    2012-01-01

    This article describes the rationale and efficacy of a graduate-level teaching module providing loosely structured practice with real archives. Introducing early career scholars to archival methods changed their beliefs about knowledge, research, teaching, and their discipline(s). This case study suggests that archives can be productive training…

  6. Life Sciences Data Archive (LSDA)

    Data.gov (United States)

    National Aeronautics and Space Administration — NASA's Life Sciences Data Archive (LSDA) is an active archive that provides information and data from 1961 (Mercury Project) through current flight and flight...

  7. Ten years of archival science

    NARCIS (Netherlands)

    E. Ketelaar

    2010-01-01

    This article reviews how the journal Archival Science--International Journal on Recorded Information in the first 10 years has endeavoured to be integrated, interdisciplinary, and intercultural in promoting the development of archival science as an autonomous scientific discipline.

  8. Enabling worldwide access to climate simulation data: the earth system grid (ESG)

    International Nuclear Information System (INIS)

    With support from the U.S. Department of Energy's Scientific Discover Through Advanced Computing (SciDAC) program, we have developed and deployed the Earth System Grid (ESG) to make climate simulation data easily accessible to the global climate modelling and analysis community. ESG currently has 2500 registered users and manages 160 TB of data in archives distributed around the nation. From this past year alone, more than 200 scientific journal articles have been published from analyses of data delivered by the ESG

  9. Details of rice EST mapping results - RGP estmap2001 | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available Description Download License Update History of This Database Site Policy | C...[ Credits ] BLAST Search Image Search Home About Archive Update History Contact us ...d clone-specific primer pairs designed from 6713 unique EST sequences (3' end) ...nes *; PCR band size longer than predicted Ann T; 60 ℃ unless otherwise indicated NI; YACs with unknown inse...e (sites) name DDBJ Acc FW DDBJ accession of the EST clone (Forward sequence) DDBJ Acc RV DDBJ accession of the EST clone (Reverse

  10. 20 Years of Archive Fever

    OpenAIRE

    Atkins, Guy; Bulley, James

    2014-01-01

    "It is what is happening, right here, when a house, the Freuds' last house, becomes a museum: the passage from one institution to another." (Jacques Derrida, 'Archive Fever') Presented as a gift to the Freud Museum, Jacques Derrida's 1994 lecture 'Archive Fever' remains a compelling work for scholars and artists interested in the relationship between archives, memory, and technology. Originally titled 'The Concept of the Archive: A Freudian Impression', Derrida's deconstruction of the...

  11. Queering archives: A roundtable discussion

    OpenAIRE

    Arondekar, A; Cvetkovich, A; Hanhardt, CB; Kunzel, R; Nyong O, T; Rodríguez, JM; Stryker, S.

    2015-01-01

    © 2015 by MARHO: The Radical Historians’ Organization, Inc. “Queering Archives: A Roundtable Discussion” provides a reflection on histories of queer archives studies, while marking out some key directions for the field's future development. As a broad conversation about the career of the queer archival, as both intellectual project and political practice, this discussion focuses on developments and limits within North American queer studies of the archive, which emerges as a central object of...

  12. Old and New Archives

    Directory of Open Access Journals (Sweden)

    Ioana Vasiloiu

    2015-01-01

    Full Text Available Library and museum archives are real testimony of collective memory. Old or new, their "universe" is fascinating. They are the path to an almost forgotten world with all its cultural and intellectual problems or allow us to reconsider the social, historical, political and cultural present. The inestimable value of their manuscripts, books and periodicals made medieval Romanian library archives to be famous in that age. Its content figured out the Romanian humanist's vast intellectual activity and their connection to European values. Their remains, which can be found today especially at Romanian Academy Library, depict some aspects of Romanian medieval cultural life. Particularly, with its huge number of manuscripts, books and periodicals, the National Romanian Literature Museum archives contribute to Romanian history reconstruction from the commencement to present.

  13. Digital Libraries and the Problem of Purpose [and] On DigiPaper and the Dissemination of Electronic Documents [and] DFAS: The Distributed Finding Aid Search System [and] Best Practices for Digital Archiving: An Information Life Cycle Approach [and] Mapping and Converting Essential Federal Geographic Data Committee (FGDC) Metadata into MARC21 and Dublin Core: Towards an Alternative to the FGDC Clearinghouse [and] Evaluating Website Modifications at the National Library of Medicine through Search Log analysis.

    Science.gov (United States)

    Levy, David M.; Huttenlocher, Dan; Moll, Angela; Smith, MacKenzie; Hodge, Gail M.; Chandler, Adam; Foley, Dan; Hafez, Alaaeldin M.; Redalen, Aaron; Miller, Naomi

    2000-01-01

    Includes six articles focusing on the purpose of digital public libraries; encoding electronic documents through compression techniques; a distributed finding aid server; digital archiving practices in the framework of information life cycle management; converting metadata into MARC format and Dublin Core formats; and evaluating Web sites through…

  14. Development of an Online Archive for Terrestrial Laser Scanning Data

    Science.gov (United States)

    Crosby, Christopher; Lowry, Ben; McWhirter, Jeff; Phillips, David; Meertens, Chuck

    2013-04-01

    The UNAVCO Geodetic Imaging program provides terrestrial laser scanning (TLS) support to the Earth science research community through a TLS instrumentation pool of five scanners, field engineering, data processing, and technical training. As part of this community TLS support role, UNAVCO is responsible for generation of level one (L1) TLS data products and TLS data archive and access. A UNAVCO-organized and US National Science Foundation-funded TLS community workshop held October 2011 in Boulder, Colorado defined many of the challenges and requirements a TLS data archive and access system must address. TLS data acquisition presents unique challenges for metadata, provenance capture, and data archive. TLS datasets are often large and level zero (L0 - raw) data are stored in a variety of proprietary formats, requiring conversion and standardization for access and exchange. Due to the wide range of scientific and engineering objectives that motivate TLS data collection, field methods and collection techniques vary greatly and must be thoroughly documented in project metadata. These challenges make data and metadata capture, preservation, and provenance important objectives for an online TLS archive. To address these challenges, UNAVCO is developing a TLS archive based on the open source RAMADDA platform (http://ramadda.org). The UNAVCO TLS archive will provide online archive of L0 and L1 data products, capture field metadata and data processing workflows for provenance, and store original georeferencing information. In addition, the TLS repository provides on-demand services for simple point cloud visualization, data sub-setting and thinning, and file format (e.g., LAS, ASCII, proprietary) data conversion. The system also offers automation of RINEX processing of GPS data, OPUS and CSRS submission and solution ingestion, and generation of control point lists to streamline georeferencing of TLS point cloud data. Georeferencing metadata and GPS file provenance are

  15. Cultivating archives: meanings and identities

    NARCIS (Netherlands)

    E. Ketelaar

    2012-01-01

    By cultivating archives through successive activations, people and communities define their identities. In these activations, the meanings of archives are constructed and reconstructed. Archives are not a static artifact imbued with the record creator’s voice alone, but a dynamic process involving a

  16. The Ethics of Archival Research

    Science.gov (United States)

    McKee, Heidi A.; Porter, James E.

    2012-01-01

    What are the key ethical issues involved in conducting archival research? Based on examination of cases and interviews with leading archival researchers in composition, this article discusses several ethical questions and offers a heuristic to guide ethical decision making. Key to this process is recognizing the person-ness of archival materials.…

  17. Digital audiovisual archives

    CERN Document Server

    Stockinger, Peter

    2013-01-01

    Today, huge quantities of digital audiovisual resources are already available - everywhere and at any time - through Web portals, online archives and libraries, and video blogs. One central question with respect to this huge amount of audiovisual data is how they can be used in specific (social, pedagogical, etc.) contexts and what are their potential interest for target groups (communities, professionals, students, researchers, etc.).This book examines the question of the (creative) exploitation of digital audiovisual archives from a theoretical, methodological, technical and practical

  18. Costs of Archival Storage

    DEFF Research Database (Denmark)

    Nielsen, Anders Bo; Thirifays, Alex; Kejser, Ulla Bøgvad

    2012-01-01

    This paper presents an analysis of the cost of archival storage. The study is part of a project conducted by The Danish National Archives, The Royal Library, and The State and University Library to develop a generic cost model for digital preservation (CMDP). The purposes of the study were to...... determine the costs of establishing and maintaining a preservation solution destined for long-term preservation of digital materials and to develop a tool capable of doing this operation. In order to fulfill the purposes, the project employed a combination of own and external experience as well as the OAIS...

  19. The What's, How's, and Why's of Open Access

    OpenAIRE

    Shearer, Kathleen

    2007-01-01

    This presentation, designed for faculty members, presents an overview of why open access is necessary, and how to go about it. Provides samples of the high cost of journal prices and pay-per-view, definition of open access, and the two means of providing open access: OA publishing, and self-archiving. The Directory of Open Access Journals (DOAJ) new author search is featured, as is the Canadian Association of Research Libraries (CARL) Institutional Repository project.

  20. Funding free and universal access to Journal of Neuroinflammation

    Directory of Open Access Journals (Sweden)

    Griffin W Sue T

    2004-10-01

    Full Text Available Abstract Journal of Neuroinflammation is an Open Access, online journal published by BioMed Central. Open Access publishing provides instant and universal availability of published work to any potential reader, worldwide, completely free of subscriptions, passwords, and charges. Further, authors retain copyright for their work, facilitating its dissemination. Open Access publishing is made possible by article-processing charges assessed "on the front end" to authors, their institutions, or their funding agencies. Beginning November 1, 2004, the Journal of Neuroinflammation will introduce article-processing charges of around US$525 for accepted articles. This charge will be waived for authors from institutions that are BioMed Central members, and in additional cases for reasons of genuine financial hardship. These article-processing charges pay for an electronic submission process that facilitates efficient and thorough peer review, for publication costs involved in providing the article freely and universally accessible in various formats online, and for the processes required for the article's inclusion in PubMed and its archiving in PubMed Central, e-Depot, Potsdam and INIST. There is no remuneration of any kind provided to the Editors-in-Chief, to any members of the Editorial Board, or to peer reviewers; all of whose work is entirely voluntary. Our article-processing charge is less than charges frequently levied by traditional journals: the Journal of Neuroinflammation does not levy any additional page or color charges on top of this fee, and there are no reprint costs as publication-quality pdf files are provided, free, for distribution in lieu of reprints. Our article-processing charge will enable full, immediate, and continued Open Access for all work published in Journal of Neuroinflammation. The benefits from such Open Access will accrue to readers, through unrestricted access; to authors, through the widest possible dissemination of

  1. 基于RBAC的文件级分布式安全访问控制系统的研究%Research on a File Level Distributed Secure Access Control System Based on RBAC

    Institute of Scientific and Technical Information of China (English)

    王俊; 贾连兴; 姚海潮; 何建平

    2011-01-01

    访问控制技术能够有效避免对数据的非法访问,增强对用户行为的管理.依托分布式并行文件系统GlusterFS,结合RBAC思想,设计了一个文件级分布式安全访问控制系统—Distributed Secure Access Control System(DSAS).重点研究了存储系统中RBAC机制的实现方法,提出了基于角色证书的用户身份验证及角色授权机制.测试结果表明,DSAS系统在满足数据安全性需求的同时,同样能够较好地满足存储系统性能需求.%Access control technology can effectively avoid the unauthorized access for data and strengthen the management to the customer behavior. Depended on the distributed parallel file system GlusterFS and combined with the principles of RBAC, this paper designed a file level Distributed Secure Access Control System(DSAS), mainly studied the carrying out of RBAC mechanism method in the storage system, put forward customer identity verification and role authorization mechanism based on the role credential. Test results illustrated that DSAS system can be well fulfill the need for data reliability and security and the need for storage system performance.

  2. Looking back, looking forward: 10 years of development to collect, preserve and access the Danish Web

    DEFF Research Database (Denmark)

    Laursen, Ditte; Møldrup-Dalum, Per

    Digital heritage archiving is an ongoing activity that requires commitment, involvement and cooperation between heritage institutions and policy makers as well as producers and users of information. In this presentation, we will address how a web archive is created over time as well as what or who...... drives the development of a web archive. Empirically, we will look back on the 10 years of development to collect, preserve and access the Danish web, in the Danish national web archive called Netarkivet. In particular, we will address how a web archive is created and re-created over time in relation to...

  3. Huddersfield Open Access Publishing final report

    OpenAIRE

    Stone, Graham; White, Sue; Robinson, Denise; Pitchford, Ian; Edmunds, Cherry

    2012-01-01

    The Huddersfield Open Access Publishing (HOAP) Project aimed to develop a low cost sustainable journal publishing platform using EPrints software. The development of the HOAP platform has three main outcomes as part of the project. It has been used to convert the University journal, Teaching in Lifelong Learning, from its existing model of a print subscription journal to an open access e-journal. A specific front end has been created for the journal, with content being archived in the Uni...

  4. Enclosure and open access in communication scholarship

    OpenAIRE

    Morrison, Heather

    2011-01-01

    The current state of scholarly communication is one of contest between an increasingly commercial system that is dysfunctional and incompatible with the basic aims of scholarship, and emerging alternatives, particularly open access publishing and open access archiving. Two approaches to facilitating global participation in scholarly communication are contrasted in this paper; equity is seen as a superior goal to the donor model, which requires poverty or inequity to succeed. The current stat...

  5. Physical Oceanography Distributed Active Archive Center

    Science.gov (United States)

    Benada, J. Robert

    1997-01-01

    This new TOPEX/POSEIDON product provides the full mission data set in a new format with many data quality improvements brought about by the work of many scientists during the mission. It is a revised form to the MGDR-A CD-ROM set which covered data from the beginning of the mission, Septermber 22, 1992 to April 23, 1996.

  6. ITERDB—The Data Archiving System for ITER

    Energy Technology Data Exchange (ETDEWEB)

    Abla, Gheni, E-mail: abla@fusion.gat.com [General Atomics, P.O. Box 85608, San Diego, CA 92186-5608 (United States); Heber, Gerd [The HDF Group, 1800 South Oak Street, Suite 203, Champaign, IL 61820 (United States); Schissel, David P. [General Atomics, P.O. Box 85608, San Diego, CA 92186-5608 (United States); Robinson, Dana [The HDF Group, 1800 South Oak Street, Suite 203, Champaign, IL 61820 (United States); Abadie, Lana; Wallander, Anders [ITER Organization, Route de Vinon-sur-Verdon, 13115 St. Paul-lez-Durance (France); Flanagan, Sean M. [General Atomics, P.O. Box 85608, San Diego, CA 92186-5608 (United States)

    2014-05-15

    Highlights: • We identified the software requirements and priorities for the ITER data archiving. • We designed ITERDB – a system architecture for ITER data archiving. • We investigated the feasibility of using HDF5 as the ITERDB internal data store file format. - Abstract: For ITER, acquiring, managing and archiving its data is an essential task. ITER is foreseen to produce up to one terabyte of data per pulse and several petabytes of data per year. All the produced data needs to be stored and managed. The stored data is expected to serve the data access needs of ITER researchers located both on the ITER premises as well as worldwide during ITER's lifetime and beyond. ITERDB is a data management system being designed for centralized ITER data archival and data access. It is designed to manage and serve both unprocessed and processed data from the ITER plant systems and data analysis workflows. In this paper, we report the ITER Data Archiving System software requirements and priorities that have been identified by working with ITER staff and a large number of stakeholders. We will describe the design challenges and the proposed solutions. We will also present the current state of the ITERDB software architecture design.

  7. ITERDB—The Data Archiving System for ITER

    International Nuclear Information System (INIS)

    Highlights: • We identified the software requirements and priorities for the ITER data archiving. • We designed ITERDB – a system architecture for ITER data archiving. • We investigated the feasibility of using HDF5 as the ITERDB internal data store file format. - Abstract: For ITER, acquiring, managing and archiving its data is an essential task. ITER is foreseen to produce up to one terabyte of data per pulse and several petabytes of data per year. All the produced data needs to be stored and managed. The stored data is expected to serve the data access needs of ITER researchers located both on the ITER premises as well as worldwide during ITER's lifetime and beyond. ITERDB is a data management system being designed for centralized ITER data archival and data access. It is designed to manage and serve both unprocessed and processed data from the ITER plant systems and data analysis workflows. In this paper, we report the ITER Data Archiving System software requirements and priorities that have been identified by working with ITER staff and a large number of stakeholders. We will describe the design challenges and the proposed solutions. We will also present the current state of the ITERDB software architecture design

  8. Problems and possibilities of digital newspaper and periodical archives

    Directory of Open Access Journals (Sweden)

    Thomas Smits

    2014-12-01

    Full Text Available Digital newspaper archives are the most widely used resource for digital humanities research. The basic functionality of these archives – the ability to perform keyword searches across multiple titles – is unlikely to change. This means that researchers can safely develop a digital methodology without having to fear that new technology will make their efforts obsolete. On the basis of this observation, this article discusses three methodological problems of the digital newspaper archive. First, it provides unequal access to both different scholars and historical periods. Second, it tends to ignore the historical form of media landscapes. Third, the digital mediation of newspapers and periodicals results in a problematic loss of context. This article proposes that the solution to these problems lies in the assertion of agency over the digital newspaper archive and in the debates surrounding them by researchers. They should see digital newspaper archive as any other paper archive: with its own possibilities and limitations, which can be adjusted by the researcher.  

  9. Aggregating Metadata from Multiple Archives: a Non-VO Approach

    Science.gov (United States)

    Gwyn, S. D. J.

    2015-09-01

    The Solar System Object Image Search (SSOIS) tool at the Canadian Astronomy Data Centre allows users to search for images of moving objects taken with a large number of ground-based and space-based telescopes. (Gwyn et al. 2012). The ever-growing list of telescopes includes HST, Subaru, CFHT, Gemini, SDSS, AAT, NEAT, NOAO, WISE and the ING and ESO telescopes. The first step in constructing SSOIS is to agregate the metadata from the various archives. An effective search requires the RA, Dec, and time of the exposure, and the field of view of the instrument. The archives are extremely hetergeneous; in some cases the interface dates back to the 1990s. After scraping these archives, four lessons have been learned: 1) The more primitive the archive, the easier it is to scrape. 2) Simple Image Access Protocol (SIAP) is not an effective means of scraping archives. 3) When scraping an archive with multiple queries, the queries should be done by time rather by than sky position. 4) Retrieving the metadata is relatively easy, the hard work is in the quality control and understanding each telescope/instrument.

  10. Librarian and LIS Faculty Participation in Self-Archiving Practice Needs Improvement. A Review of: Xia, J., Wilhoite, S. K., & Myers, R. L. (2011. A “librarian-LIS faculty” divide in open access practice. Journal of Documentation, 67(5, 791-805. doi:10.1108/00220411111164673

    Directory of Open Access Journals (Sweden)

    Annie M. Hughes

    2012-06-01

    downloadable, it was included; otherwise, it was not included. Researchers also avoided linking to articles through their own library portal which would have allowed for access to articles through their own library’s subscription. Other data was collected using Web of Science and included citation information; length of articles; and number of references, authors, and self-citations.Analysis of data was performed utilizing logistic regression. The researchers selected the professional status (librarian or faculty as the dependent variable, assigning 1 to librarian status and 0 to faculty status. The independent variables included the OA status of an article, citation count, self-citation counts, number of authors, length in pages, and number of references. Researchers also chose to normalize data by adding one citation to every article in the dataset because many did not receive citations. SPSS was utilized as the statistical analysis tool.Main Results – Researchers were able to recognize a divide with regard to where librarians and librarian faculty publish. Librarians tend to avoid journals that focus on information science and publish more in journals related to the practice of librarianship.After performing the logistic regression analysis, researchers also chose to look at the “dichotomous dependent variable” and the “dichotomous predictor variable.” The dependent variable was article availability in OA and the predictor variable is professional status of the author. They ran a 2X2 contingency table and the p-value was below 0.05; therefore, there was a failure to reject the null hypotheses that there is no difference between librarian and faculty publication behaviors. An odds ratio was also calculated that reveals that librarians are only 1.029 times more likely to self-archive their articles than faculty.Results from the logistic regression model analysis also included information that librarians and faculty have similar behavior with regard to self-archiving

  11. NASA Data Archive Evaluation

    Science.gov (United States)

    Holley, Daniel C.; Haight, Kyle G.; Lindstrom, Ted

    1997-01-01

    The purpose of this study was to expose a range of naive individuals to the NASA Data Archive and to obtain feedback from them, with the goal of learning how useful people with varied backgrounds would find the Archive for research and other purposes. We processed 36 subjects in four experimental categories, designated in this report as C+R+, C+R-, C-R+ and C-R-, for computer experienced researchers, computer experienced non-researchers, non-computer experienced researchers, and non-computer experienced non-researchers, respectively. This report includes an assessment of general patterns of subject responses to the various aspects of the NASA Data Archive. Some of the aspects examined were interface-oriented, addressing such issues as whether the subject was able to locate information, figure out how to perform desired information retrieval tasks, etc. Other aspects were content-related. In doing these assessments, answers given to different questions were sometimes combined. This practice reflects the tendency of the subjects to provide answers expressing their experiences across question boundaries. Patterns of response are cross-examined by subject category in order to bring out deeper understandings of why subjects reacted the way they did to the archive. After the general assessment, there will be a more extensive summary of the replies received from the test subjects.

  12. Software Archive Related Issues

    Science.gov (United States)

    Angelini, Lorella

    2008-01-01

    With the archive opening of the major X-ray and Gamma ray missions, the school is intended to provide information on the resource available in the data archive and the public software. This talk reviews the archive content, the data format for the major active missions Chandra, XMM-Newton, Swift, RXTE, Integral and Suzaku and the available software for each of these missions. It will explain the FITS format in general and the specific layout for the most popular mission, explaining the role of keywords and how they fit in the multimission standard approach embrace by the High Energy Community. Specifically, it reviews : the difference data levels and the difference software applicable; the popular/standard method of analysis for high level products such as spectra, timing and images; the role of calibration in the multi mission approach; how to navigate the archive query databases. It will present also how the school is organized and how the information provided will be relevant to each of the afternoon science projects that will be proposed to the students and led by a project leader

  13. Open Archives Initiative

    OpenAIRE

    McMillan, Gail

    2004-01-01

    This presentation, which was given at the annual meeting of the Society of Scholarly Publishing on June 1, 2000, describes the Open Archives Initiative (OAI), a protocol for exchanging content between digital repositories. The presentation outlines OAI's history, core components, key stakeholders, and ongoing developments. Presented at the Society for Scholarly Publishing: June 1, 2000

  14. Mayan Master Speakers – The Archive of the Indigenous Languages of Chiapas

    OpenAIRE

    B. Haviland, John

    2004-01-01

    The Archive of the Indigenous Languages of Chiapas is an electronic database documenting the three principal Indian languages of Chiapas, Mexico. This report describes the design philosophy behind the archive, intended to distribute its results in digital form via the Internet. It illustrates some of the products of the Archive, ranging from standard linguistic description and lexicography, through semi-experimental elicitation, to ethnographically situated interaction characte...

  15. Automated Archiving of Archaeological Aerial Images

    Directory of Open Access Journals (Sweden)

    Michael Doneus

    2016-03-01

    Full Text Available The main purpose of any aerial photo archive is to allow quick access to images based on content and location. Therefore, next to a description of technical parameters and depicted content, georeferencing of every image is of vital importance. This can be done either by identifying the main photographed object (georeferencing of the image content or by mapping the center point and/or the outline of the image footprint. The paper proposes a new image archiving workflow. The new pipeline is based on the parameters that are logged by a commercial, but cost-effective GNSS/IMU solution and processed with in-house-developed software. Together, these components allow one to automatically geolocate and rectify the (oblique aerial images (by a simple planar rectification using the exterior orientation parameters and to retrieve their footprints with reasonable accuracy, which is automatically stored as a vector file. The data of three test flights were used to determine the accuracy of the device, which turned out to be better than 1° for roll and pitch (mean between 0.0 and 0.21 with a standard deviation of 0.17–0.46 and better than 2.5° for yaw angles (mean between 0.0 and −0.14 with a standard deviation of 0.58–0.94. This turned out to be sufficient to enable a fast and almost automatic GIS-based archiving of all of the imagery.

  16. Archiving the Wonders of Testosterone via YouTube

    DEFF Research Database (Denmark)

    Raun, Tobias

    2015-01-01

    The article engages with trans male video blogs on YouTube, framing them as living archives that offer unique opportunities to access and share embodied trans knowledges—which have previously been limited or inaccessible—such as information about and visual accounts of medical transitioning...... privileged site of self-fashioning. YouTube hereby offers an alternative and empowering archive of how trans male bodies could look, while its cumulative effects also play a significant role in determining how they should look....

  17. Picture archiving and communication system for CT, MR, and US

    International Nuclear Information System (INIS)

    The authors are augmenting a CT/MR/US picture archiving and communication system (PACS) module to the two operational PACS modules (pediatric radiology and coronary care unit) in their department. The CT/MR/US PACS consists of four network components: image acquisition nodes, a digital network, an archiving center, and display stations. Image acquisition nodes include two CT scanners, two MR imagers, and two US scanners. The archiving center is composed of a 100-platter (6.8 gigabytes per platter) optical library and a laser film printer. The centrally archived CT/MR/US images are distributed to three display stations: neuroradiology; general radiology (chest and skeletal); and abdominal radiology. Each viewing station consists of four 1,024-line noninterlaced video monitors. Up to 12 CT, 12 US, or 48 MR images can be displayed simultaneously

  18. A Study of the Archival Information Needs and Use Behavior of Historians

    Directory of Open Access Journals (Sweden)

    Chiao-Min Lin

    2013-12-01

    Full Text Available This study attempts to investigate the information needs and use behavior of historians in archives. The questionnaires and depth interview methods are pursued for a systematic investigation and realization of opinions from the faculty of history school. Interviews are taken for analyzing the information needs of historians and the difficulties of access archival collection. The results are summarized as follows: (1 The gateways of historians to access research information are library databases, catalogs and archival finding aids. (2 The material types of often use by historians are monograph, periodical and archives. (3 The strategy to find relevant archives is to search by specific person name or designated event name. (4 Browsing the architecture of categories and fonds are helpful to realize the overview of research topics. (5 The difficulties of using archives are the unfriendly retrieval system, digitization quality, integrity of the content, unclarity of classification and description, and the access restrictions. Finally, the suggestions of archival collection development and public service policies are proposed to be reference [Article content in Chinese

  19. Digital Archiving Strategies and Some Significant Archiving Projects Dijital Koruma (Arşivleme) Stratejileri ve Bazı Uygulama Örnekleri

    OpenAIRE

    Mehmet Emin Küçük

    2003-01-01

    This particular study aims to identify digital archiving strategies and examine some of the significant projects, and evaluate their specifications, applications and results. Developments in technology, wide use of information networks, and especially rapid increase in production and use of scholarly electronic sources have introduced several problems as well as opportunities for number of institutions, particularly research libraries. Archiving digital sources and providing long-term access ...

  20. National Geophysical Data Center Tsunami Data Archive

    Science.gov (United States)

    Stroker, K. J.; Dunbar, P. K.; Brocko, R.

    2008-12-01

    NOAA's National Geophysical Data Center (NGDC) and co-located World Data Center for Geophysics and Marine Geology long-term tsunami data archive provides data and derived products essential for tsunami hazard assessment, forecast and warning, inundation modeling, preparedness, mitigation, education, and research. As a result of NOAA's efforts to strengthen its tsunami activities, the long-term tsunami data archive has grown from less than 5 gigabyte in 2004 to more than 2 terabytes in 2008. The types of data archived for tsunami research and operation activities have also expanded in fulfillment of the P.L. 109-424. The archive now consists of: global historical tsunami, significant earthquake and significant volcanic eruptions database; global tsunami deposits and proxies database; reference database; damage photos; coastal water-level data (i.e. digital tide gauge data and marigrams on microfiche); bottom pressure recorder (BPR) data as collected by Deep-ocean Assessment and Reporting of Tsunamis (DART) buoys. The tsunami data archive comes from a wide variety of data providers and sources. These include the NOAA Tsunami Warning Centers, NOAA National Data Buoy Center, NOAA National Ocean Service, IOC/NOAA International Tsunami Information Center, NOAA Pacific Marine Environmental Laboratory, U.S. Geological Survey, tsunami catalogs, reconnaissance reports, journal articles, newspaper articles, internet web pages, and email. NGDC has been active in the management of some of these data for more than 50 years while other data management efforts are more recent. These data are openly available, either directly on-line or by contacting NGDC. All of the NGDC tsunami and related databases are stored in a relational database management system. These data are accessible over the Web as tables, reports, and interactive maps. The maps provide integrated web-based GIS access to individual GIS layers including tsunami sources, tsunami effects, significant earthquakes